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  • Lenticular clouds (lens or wave clouds) cap the peaks of Grand Teton (13,766 feet or 4198.6 meters) and Teewinot. The Teton Range reflects in the Snake River at Schwabacher Landing in Grand Teton National Park, Wyoming, USA. Grand Teton National Park contains the major peaks of the 40-mile (64 km) Teton Range and part of the valley known as Jackson Hole, Wyoming. The Teton Range began their tectonic uplift 9 million years ago (during the Miocene Epoch), making them the youngest range in the Rocky Mountains. A parkway connects from Grand Teton National Park 10 miles north to Yellowstone National Park. Published in the book "Mountain" by Sandy Hill, 2011, Rizzoli International Publications Inc (p. 103), a benefit for the American Alpine Club Library.
    04WY-0431.jpg
  • Calf and adult bison. American bison are protected within Yellowstone National Park, Wyoming, USA. The American bison (scientific name “Bison bison”) is also known as buffalo, despite being only distantly related to true buffalo. Members of the genus Bison are large, even-toed ungulates within the subfamily Bovinae. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0244_Yellowstone-NP.jpg
  • Palette Spring, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978. The panorama was stitched from two overlapping photos.
    04WY-0579-580pan_Palette-Spring.jpg
  • Clouds dance over the peaks of Grand Teton National Park, Wyoming, USA. The 40 mile (64 km) long Teton Range is the youngest mountain chain in the Rocky Mountains, and began their uplift 9 million years ago, during the Miocene Epoch. A parkway connects from Grand Teton National Park 10 miles north to Yellowstone National Park. Surrounding parkland and National Forest constitute the Greater Yellowstone Ecosystem, one of the largest intact mid-latitude temperate ecosystems in the world.
    04WY-0472.jpg
  • Mountain peaks reflect in the Snake River at Schwabacher Landing at sunrise, Grand Teton National Park, Wyoming, USA
    04WY-0400.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0099.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0065.jpg
  • 1998 photo: Morning Glory Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park, Wyoming, USA. Microbial mats of thermophilic (heat-loving) cyano-bacteria and algae color the pool brown, yellow, and green. After this 1998 photo, the pool's center has been losing the high temperature pure blue water. Its glory has faded as objects tossed in by vandals have blocked hot water inlets. The rising groundwater of Morning Glory Pool is heated by a hotspot of light, hot, molten mantle rock near the surface. 640,000 years ago, a supereruption of the Yellowstone Supervolcano created the Yellowstone Caldera which measures 34 miles (55 km) by 45 miles (72 km). Any time in the next few hundred millennia, the active volcano of Yellowstone could cause vast destruction in North America and modify world climate. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    98AUG-01-36_Morning-Glory-Pool.jpg
  • Sunset turns clouds orange and yellow set against a blue sky in Wyoming, USA.
    04WY-0634.jpg
  • Elk cows gather on a hotel lawn at Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. The elk or wapiti (Cervus canadensis) is one of the largest species of deer in the world.
    04WY-0613_Doe-elk-Yellowstone.jpg
  • A bull elk (or stag) sports a rack of antlers at Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. The elk or wapiti (Cervus canadensis) is one of the largest species of deer in the world.
    04WY-0608.jpg
  • Orange Spring Mound, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera.
    04WY-0595.jpg
  • Orange Spring Mound, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera.
    04WY-0589.jpg
  • Palette Spring, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera.
    04WY-0576.jpg
  • Palette Spring, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0560.jpg
  • Palette Spring, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera.
    04WY-0556.jpg
  • Palette Spring, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978. Published in "Light Travel: Photography on the Go" book by Tom Dempsey 2009, 2010.
    04WY-0551.jpg
  • Palette Spring, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0550.jpg
  • Canary Spring steams at Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0530.jpg
  • In mid September, leaves turn yellow above white aspen trunks in South Fork Teton Canyon, Jedediah Smith Wilderness, Caribou-Targhee National Forest, Wyoming, USA.
    04WY-0495.jpg
  • The peaks of Grand Teton and Teewinot reflect in ripples of in the Snake River in Grand Teton National Park, Wyoming, USA. The 40 mile (64 km) long Teton Range is the youngest mountain chain in the Rocky Mountains, and began their uplift 9 million years ago, during the Miocene Epoch.
    04WY-0444.jpg
  • Sunrise on Mount Moran dusted with fresh snow, Grand Teton National Park, Wyoming, USA. The panorama was stitched from two overlapping photos.
    04WY-0419-420pan_Mt-Moran.jpg
  • Middle and Grand Teton and Teewinot reflect in the Snake River at Schwabacher Landing, Grand Teton National Park, Wyoming, USA
    04WY-0412.jpg
  • Middle and Grand Teton and Teewinot reflect in the Snake River at Schwabacher Landing, Grand Teton National Park, Wyoming, USA
    04WY-0410.jpg
  • Middle and Grand Teton and Teewinot seen from Schwabacher Landing, Grand Teton National Park, Wyoming, USA
    04WY-0409.jpg
  • Middle and Grand Teton seen from Schwabacher Landing, Grand Teton National Park, Wyoming, USA
    04WY-0408.jpg
  • A mother moose and calf browse in Granite Canyon, Grand Teton National Park, Wyoming, USA
    04WY-0370_moose-cow-calf.jpg
  • At Jackson Lake, sunrise illuminates clouds and mountains with orange and yellow  light. Grand Teton National Park contains the major peaks of the 40-mile (64 km) Teton Range and part of the valley known as Jackson Hole, in Wyoming, USA. A parkway connects 10 miles north to Yellowstone National Park. Surrounding parkland and National Forest constitute the Greater Yellowstone Ecosystem, one of the largest intact mid-latitude temperate ecosystems in the world. Five overlapping images were stitched to make this panorama.
    04WY-0301-305pan_Teton_Jackson-Lake.jpg
  • At Jackson Lake, sunrise illuminates clouds with orange, pink, and magenta light. Grand Teton National Park contains the major peaks of the 40-mile (64 km) Teton Range and part of the valley known as Jackson Hole, in Wyoming, USA. A parkway connects 10 miles north to Yellowstone National Park. Surrounding parkland and National Forest constitute the Greater Yellowstone Ecosystem, one of the largest intact mid-latitude temperate ecosystems in the world.  Three overlapping images were stitched to make this panorama.
    04WY-0288-290pan_Jackson-Lake_Tetons.jpg
  • 2004 photo: Morning Glory Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park, Wyoming, USA. Microbial mats of thermophilic (heat-loving) cyano-bacteria and algae color the pool brown, yellow, and green. The pool's center lacks the high temperature pure blue water seen in previous decades. Its glory has faded as objects tossed in by vandals have blocked hot water inlets. The rising groundwater of Morning Glory Pool is heated by a hotspot of light, hot, molten mantle rock near the surface. 640,000 years ago, a supereruption of the Yellowstone Supervolcano created the Yellowstone Caldera which measures 34 miles (55 km) by 45 miles (72 km). Any time in the next few hundred millennia, the active volcano of Yellowstone could cause vast destruction in North America and modify world climate. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0228.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978. Photo was published in "Light Travel: Photography on the Go" book by Tom Dempsey 2009, 2010.  Three overlapping images were stitched to make this panorama.
    04WY-0162-164pan-Grand-Prismatic-Spr...jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978. Six overlapping images were stitched to make this panorama.
    04WY-0134-139pan_Grand-Prismatic-Spr...jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0127.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0100.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0090.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0025.jpg
  • The Yellowstone River flows through the Grand Canyon of the Yellowstone downstream from Yellowstone Falls in Yellowstone National Park, in Wyoming, USA. Yellowstone River is a major tributary of the Missouri River. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    98AUG-04-29_Yellowstone-River-Grand-...jpg
  • A bull elk (or stag) sports a rack of antlers at Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. The elk or wapiti (Cervus canadensis) is one of the largest species of deer in the world. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0609_Bull-elk-antler-rack.jpg
  • A bull elk (or stag) sports a rack of antlers at Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. The elk or wapiti (Cervus canadensis) is one of the largest species of deer in the world.
    04WY-0605.jpg
  • Palette Spring, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera.
    04WY-0559.jpg
  • Lenticular clouds (lens shaped standing-wave clouds) hover in winds blowing over the peaks of Grand Teton and Teewinot, in Grand Teton National Park, Wyoming, USA. The 40 mile (64 km) long Teton Range is the youngest mountain chain in the Rocky Mountains, and began their uplift 9 million years ago, during the Miocene Epoch.
    04WY-0434_Grand-Teton_Teewinot.jpg
  • Fresh snow dusts mountain peaks which reflect in the Snake River at Schwabacher Landing at sunrise in Grand Teton National Park, Wyoming, USA. Five images were stitched to make this panorama. Published in "Light Travel: Photography on the Go" book by Tom Dempsey 2009, 2010.
    04WY-0413-417pan_Teton_Schwabacher.jpg
  • Middle and Grand Teton and Teewinot reflect in the Snake River at Schwabacher Landing, Grand Teton National Park, Wyoming, USA
    04WY-0404.jpg
  • Leaves turn yellow in the fall by white aspen trunks in Granite Canyon, Grand Teton National Park, Wyoming, USA.
    04WY-0386.jpg
  • Lichen and rock pattern in Granite Canyon, Grand Teton National Park, Wyoming, USA
    04WY-0356.jpg
  • At Jackson Lake, sunrise illuminates clouds with orange, pink, and magenta light. Grand Teton National Park contains the major peaks of the 40-mile (64 km) Teton Range and part of the valley known as Jackson Hole, in Wyoming, USA. A parkway connects 10 miles north to Yellowstone National Park. Surrounding parkland and National Forest constitute the Greater Yellowstone Ecosystem, one of the largest intact mid-latitude temperate ecosystems in the world.
    04WY-0287.jpg
  • At Jackson Lake, sunrise illuminates clouds with orange, pink, and magenta light. Grand Teton National Park contains the major peaks of the 40-mile (64 km) Teton Range and part of the valley known as Jackson Hole, in Wyoming, USA. A parkway connects 10 miles north to Yellowstone National Park. Surrounding parkland and National Forest constitute the Greater Yellowstone Ecosystem, one of the largest intact mid-latitude temperate ecosystems in the world. Five overlapping images were stitched to make this panorama.
    04WY-0282-886pan_Jackson-Lake_Teton.jpg
  • Garnet Canyon, Middle Teton, hikers, Grand Teton National Park, Wyoming, USA
    04WY-0261.jpg
  • Mineral deposits form the arches of Grotto Geyser in Yellowstone National Park, Wyoming, USA. Grotto Geyser is powered by boiling groundwater heated by a hotspot of light, hot, molten mantle rock near the surface. 640,000 years ago, a supereruption of the Yellowstone Supervolcano created the Yellowstone Caldera which measures 34 miles (55 km) by 45 miles (72 km). Any time in the next few hundred millennia, the active volcano of Yellowstone threatens vast destruction in North America and modification of world climate. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0217_Grotto-Geyser.jpg
  • The famous cone geyser of Old Faithful erupts in Yellowstone National Park, Wyoming, USA. Old Faithful shoots up to 185 feet high, averaging 145 feet high, about every 90 minutes. Old Faithful is powered by boiling groundwater heated by a hotspot of light, hot, molten mantle rock near the surface. 640,000 years ago, a supereruption of the Yellowstone Supervolcano created the Yellowstone Caldera which measures 34 miles (55 km) by 45 miles (72 km). Any time in the next few hundred millennia, the active volcano of Yellowstone threatens vast destruction in North America and modification of world climate. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0179_Old-Faithful.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0091_Yellowstone-NP.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0081.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0043.jpg
  • A geyser erupts on Fountain Paint Pot trail, Yellowstone National Park, Wyoming, USA. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    98AUG-04-22_Fountain-Paint-Pot-Trail...jpg
  • Clouds dance over the peaks of Grand Teton National Park, Wyoming, USA. The 40 mile (64 km) long Teton Range is the youngest mountain chain in the Rocky Mountains, and began their uplift 9 million years ago, during the Miocene Epoch. A parkway connects from Grand Teton National Park 10 miles north to Yellowstone National Park. Surrounding parkland and National Forest constitute the Greater Yellowstone Ecosystem, one of the largest intact mid-latitude temperate ecosystems in the world.
    04WY-0464.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. Microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive here. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. Orange, red, and brown algal mats grow along edges of  effluent hot water. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    04WY-0113_Yellowstone-NP.jpg
  • Colorful microbial mats coat terraces of Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.  Nine overlapping images were stitched to make this panorama.
    04WY-0031-39pan-Grand-Prismatic-Spri...jpg
  • Angel Terrace, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera.
    04WY-0602.jpg
  • Angel Terrace, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. Over thousands of years, Mammoth Hot Springs have built white travertine terraces. Algae and bacteria tint the travertine shades of brown, orange, red, and green. Terrace Mountain (including Minerva Terrace) at Mammoth Hot Springs is the largest known carbonate-depositing spring in the world. The Mammoth Hotel and Fort Yellowstone are built upon the old Hotel Terrace formation. Hot water from Norris Geyser Basin within the Yellowstone Caldera travels underground via a fault line through limestone and deposits calcium carbonate at Mammoth Hot Springs, outside of the active supervolcano’s caldera.
    04WY-0601.jpg
  • East Temple Peak at sunset, in Bridger Wilderness, Wind River Range, Bridger-Teton National Forest, Rocky Mountains, Wyoming, USA. Backpack to Big Sandy Lake Campground (11 miles round trip with 1000 feet gain). Day hike from Big Sandy Lake to Clear Lake and Deep Lake below East Temple Peak then loop back via Temple Lake, Miller Lake, and Rapid Lake (7.5 miles, 1060 ft gain) on the Continental Divide Trail. Wind River Range, Bridger-Teton National Forest, Rocky Mountains, Wyoming, USA. The Continental Divide follows the crest of the "Winds". Mostly composed of granite batholiths formed deep within the earth over 1 billion years ago, the Wind River Range is one of the oldest mountain ranges in North America. These granite monoliths were uplifted, exposed by erosion, then carved by glaciers 500,000 years ago to form cirques and U-shaped valleys.
    1909US1-0813.jpg
  • Lower Yellowstone Falls seen from Artist Point on South Rim Trail. The Yellowstone River flows through the Grand Canyon of the Yellowstone in Yellowstone National Park, in Wyoming, USA. Yellowstone River is a major tributary of the Missouri River. Yellowstone was established as the world's first national park in 1872 and was listed by UNESCO as a World Heritage site in 1978.
    20.10US1-1083.jpg
  • Lower Yellowstone Falls seen from the South Rim Trail. The Yellowstone River flows through the Grand Canyon of the Yellowstone in Yellowstone National Park, in Wyoming, USA. Yellowstone River is a major tributary of the Missouri River. Yellowstone was established as the world's first national park in 1872 and was listed by UNESCO as a World Heritage site in 1978.
    20.10US1-1063.jpg
  • Yellow fall leaf colors at Buffalo Bill Reservoir boat ramp at Buffalo Bill State Park, North Shore Campground, Cody, Wyoming, USA.
    20.10US1-0934.jpg
  • Bighorn Peak seen from Loaf Mountain Overlook. Bighorn National Forest, Wyoming, USA. We drove across scenic Powder River Pass in the Bighorn Mountains, with views of Cloud Peak Wilderness. The Bighorn Mountains are a spur of the Rocky Mountains.
    20.10US1-0930.jpg
  • In Cirque of the Towers, Pingora Peak rises above Lonesome Lake at sunrise, seen from Jackass Pass, in Bridger Wilderness, Wind River Range, Bridger-Teton National Forest, Rocky Mountains, Wyoming, USA. We backpacked to Big Sandy Lake Campground (11 miles round trip with 1000 feet gain). Two hours before sunrise, I departed from Big Sandy Lake to reach Jackass Pass viewpoint for Cirque of the Towers and Lonesome Lake (6.5 miles round trip, 1860 ft gain) on the Continental Divide Trail. The Continental Divide follows the crest of the "Winds". Mostly composed of granite batholiths formed deep within the earth over 1 billion years ago, the Wind River Range is one of the oldest mountain ranges in North America. These granite monoliths were uplifted, exposed by erosion, then carved by glaciers 500,000 years ago to form cirques and U-shaped valleys. This image was stitched from multiple overlapping photos.
    1909US1-1301-Pano.jpg
  • The sharp point of East Temple Peak rises above Deep Lake in  Bridger Wilderness. At left is the shoulder of Haystack Mountain. Backpack to Big Sandy Lake Campground (11 miles round trip with 1000 feet gain). Day hike from Big Sandy Lake to Clear Lake and Deep Lake below East Temple Peak then loop back via Temple Lake, Miller Lake, and Rapid Lake (7.5 miles, 1060 ft gain) on the Continental Divide Trail. Wind River Range, Bridger-Teton National Forest, Rocky Mountains, Wyoming, USA. The Continental Divide follows the crest of the "Winds". Mostly composed of granite batholiths formed deep within the earth over 1 billion years ago, the Wind River Range is one of the oldest mountain ranges in North America. These granite monoliths were uplifted, exposed by erosion, then carved by glaciers 500,000 years ago to form cirques and U-shaped valleys. This image was stitched from multiple overlapping photos.
    1909US1-1002-Pano-2.jpg
  • See Cirque of the Towers in the distance as we cross granite rocks along Little Sandy Trail during the ascent from Clear Lake to Deep Lake, in Bridger Wilderness, Wind River Range, Bridger-Teton National Forest, Rocky Mountains, Wyoming, USA. Backpack to Big Sandy Lake Campground (11 miles round trip with 1000 feet gain). Day hike from Big Sandy Lake to Clear Lake and Deep Lake below East Temple Peak then loop back via Temple Lake, Miller Lake, and Rapid Lake (7.5 miles, 1060 ft gain) on the Continental Divide Trail. The Continental Divide follows the crest of the "Winds". Mostly composed of granite batholiths formed deep within the earth over 1 billion years ago, the Wind River Range is one of the oldest mountain ranges in North America. These granite monoliths were uplifted, exposed by erosion, then carved by glaciers 500,000 years ago to form cirques and U-shaped valleys.
    1909US1-0905.jpg
  • Sunrise hits our tent at Big Sandy Lake Campground in Bridger Wilderness, Wind River Range, Bridger-Teton National Forest, Rocky Mountains, Wyoming, USA.  Backpack to Big Sandy Lake Campground (11 miles round trip with 1000 feet gain). Day hike from Big Sandy Lake to Clear Lake and Deep Lake below East Temple Peak then loop back via Temple Lake, Miller Lake, and Rapid Lake (7.5 miles, 1060 ft gain) on the Continental Divide Trail. The Continental Divide follows the crest of the "Winds". Mostly composed of granite batholiths formed deep within the earth over 1 billion years ago, the Wind River Range is one of the oldest mountain ranges in North America. These granite monoliths were uplifted, exposed by erosion, then carved by glaciers 500,000 years ago to form cirques and U-shaped valleys. Glaci
    1909US1-0876.jpg
  • The Pink House, bunkhouse and barn preserved at John Moulton Homestead, at the corner of Mormon Row and Antelope Flats Road, in the valley of Jackson Hole, Grand Teton National Park, Wyoming, USA. This image was stitched from multiple overlapping photos.
    1909US1-0560-564-Pano.jpg
  • Cabin ruins on Gros Ventre Road in the valley of Jackson Hole, in Grand Teton National Park, in Wyoming, USA.
    1909US1-0447.jpg
  • Slide Lake in Bridger-Teton National Forest, Wind River Range, Rocky Mountains, Wyoming, USA. Hike from Green River Lakes to Slide Lake (13+ miles round trip with 2100 feet gain). The Continental Divide follows the crest of the "Winds". Mostly composed of granite batholiths formed deep within the earth over 1 billion years ago, the Wind River Range is one of the oldest mountain ranges in North America. These granite monoliths were uplifted, exposed by erosion, then carved by glaciers 500,000 years ago to form cirques and U-shaped valleys. Glaciers scoured the terminal moraine which naturally dams the Green River Lakes, the headwaters of the Green River (chief tributary to the Colorado River). This image was stitched from multiple overlapping photos.
    1909US1-0299-309-Pano.jpg
  • Sunset dramatically backlights clouds at Green River Lakes Campground, in the Wind River Range, Bridger-Teton National Forest, Rocky Mountains, Wyoming, USA. The Continental Divide follows the crest of the "Winds".
    1909US1-0178.jpg
  • The granite monolith of Squaretop Mountain (11,695 feet elevation) rises above Upper Green River Lake, in the Wind River Range, Bridger-Teton National Forest, Rocky Mountains, Wyoming, USA. We hiked a lollipop loop around Lower Green River Lake including the side trip to Upper Green River Lake (totalling 7.2 miles with 700 feet gain). The Continental Divide follows the crest of the "Winds". Mostly composed of granite batholiths formed deep within the earth over 1 billion years ago, the Wind River Range is one of the oldest mountain ranges in North America. These granite monoliths were uplifted, exposed by erosion, then carved by glaciers 500,000 years ago to form cirques and U-shaped valleys. Glaciers scoured the terminal moraine which naturally dams the Green River Lakes, the headwaters of the Green River (chief tributary to the Colorado River).
    1909US1-0104.jpg
  • Geothermal steam rises from Grand Prismatic Spring. Yellowstone National Park, Wyoming, USA. This image was stitched from multiple overlapping photos.
    1709US1-3865-67-Pano_Yellowstone-NP-...jpg
  • People wander through geothermal steam on the Grand Prismatic Spring boardwalk, under a sunburst. Yellowstone National Park, Wyoming, USA.
    1709US1-3890_Yellowstone-NP-WY.jpg
  • Palette Spring, Mammoth Hot Springs. Yellowstone National Park, Wyoming, USA.
    1709US1-4623_Yellowstone-NP-WY.jpg
  • Palette Spring, Mammoth Hot Springs. Yellowstone National Park, Wyoming, USA.
    1709US1-4618_Yellowstone-NP-WY.jpg
  • Bison family on the road near Mammoth Hot Springs in Yellowstone National Park, Wyoming, USA.
    1709US1-4494_Yellowstone-NP-WY.jpg
  • Snow on pine needles. Artists’ Paint Pots Trail. Yellowstone National Park, Wyoming, USA.
    1709US1-4255_Yellowstone-NP-WY.jpg
  • Geysers spout and spray at Fountain Paint Pots in Yellowstone National Park, Wyoming, USA.
    1709US1-4210_Yellowstone-NP-WY.jpg
  • Red Spouter at Fountain Paint Pots. Yellowstone National Park, Wyoming, USA.
    1709US1-4180_Yellowstone-NP-WY.jpg
  • Admire colorful microbial mats contrasting with turquoise water at Grand Prismatic Spring overlook in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA. Starting from Fairy Falls Trailhead (OK5), walk 2 miles round trip to the Grand Prismatic Spring overlook, up a side trail. Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, next to those in New Zealand. The sterile blue water in the pool’s center is too hot to support life (87 degrees Centigrade or 188 F). Pure water selectively absorbs red wavelengths of visible light, making the center deep blue. But in cooler water along the edges, microbial mats of thermophilic (heat-loving) cyano-bacteria and algae thrive. Yellow, orange, and red pigments are produced by the bacteria as a natural sunscreen. As a result, the pool displays a spectrum of colors from the bright blue water of the center to the orange, red, and brown algal mats along the edges. Summer mats tend to be orange and red, whereas winter mats become dark green. Yellowstone was the first national park in the world (1872), and UNESCO honored it as a World Heritage site in 1978.
    1709US1-3956_Yellowstone-NP-WY.jpg
  • Snow-covered Teewinot Mountain (on left 12,325 feet) and Grand Teton (center 13,775 ft) in Grand Teton National Park, Wyoming, USA. On right is Storm Point. Grand Teton is the highest mountain in the Park.
    1709US1-3699_Grand-Teton-NP-WY.jpg
  • Devils Tower National Monument. Bear Lodge Mountains, Black Hills, Wyoming, USA. Devils Tower is a butte of intrusive igneous rock exposed by erosion in the Bear Lodge Mountains, part of the Black Hills, near Hulett and Sundance in Crook County. Devils Tower (aka Bear Lodge Butte) rises dramatically 1267 feet above the Belle Fourche River, standing 867 feet from base to summit, at 5112 feet above sea level. Devils Tower was the first United States National Monument, established on September 24, 1906 by President Theodore Roosevelt.
    1709US1-3329_Devils-Tower-WY.jpg
  • Climbers ascend Devils Tower National Monument. Bear Lodge Mountains, Black Hills, Wyoming, USA. Devils Tower is a butte of intrusive igneous rock exposed by erosion in the Bear Lodge Mountains, part of the Black Hills, near Hulett and Sundance in Crook County. Devils Tower (aka Bear Lodge Butte) rises dramatically 1267 feet above the Belle Fourche River, standing 867 feet from base to summit, at 5112 feet above sea level. Devils Tower was the first United States National Monument, established on September 24, 1906 by President Theodore Roosevelt.
    1709US1-3314_Devils-Tower-WY.jpg
  • In mid October, bright yellow cottonwood tree leaves frame Devils Tower in Belle Fourche River Campground, in Devils Tower National Monument, Wyoming, USA. Devils Tower is a butte of intrusive igneous rock exposed by erosion in the Bear Lodge Mountains, part of the Black Hills, near Hulett and Sundance in Crook County. Devils Tower (aka Bear Lodge Butte) rises dramatically 1267 feet above the Belle Fourche River, standing 867 feet from base to summit, at 5112 feet above sea level. Devils Tower was the first United States National Monument, established on September 24, 1906 by President Theodore Roosevelt.
    1709US1-3527_Devils-Tower-WY.jpg
  • In mid October, bright yellow cottonwood tree leaves frame Devils Tower in Belle Fourche River Campground, in Devils Tower National Monument, Wyoming, USA. Devils Tower is a butte of intrusive igneous rock exposed by erosion in the Bear Lodge Mountains, part of the Black Hills, near Hulett and Sundance in Crook County. Devils Tower (aka Bear Lodge Butte) rises dramatically 1267 feet above the Belle Fourche River, standing 867 feet from base to summit, at 5112 feet above sea level. Devils Tower was the first United States National Monument, established on September 24, 1906 by President Theodore Roosevelt.
    171013_171941_Devils-Tower-WY.jpg
  • Prairie dog (genus Cynomys) in Devils Tower National Monument, Wyoming, USA. Prairie dogs, a type of ground squirrel, are herbivorous burrowing rodents native to the grasslands of North America.
    1709US1-3424.jpg
  • Devils Tower National Monument. Bear Lodge Mountains, Black Hills, Wyoming, USA. Devils Tower is a butte of intrusive igneous rock exposed by erosion in the Bear Lodge Mountains, part of the Black Hills, near Hulett and Sundance in Crook County. Devils Tower (aka Bear Lodge Butte) rises dramatically 1267 feet above the Belle Fourche River, standing 867 feet from base to summit, at 5112 feet above sea level. Devils Tower was the first United States National Monument, established on September 24, 1906 by President Theodore Roosevelt.
    1709US1-3367_Devils-Tower-WY.jpg
  • The 1893 wood stake ladder for the first ascent of Devils Tower (by Willard Ripley) was restored 1972. The last known use of the ladder was in 1927 by daredevil Babe "The Fly" White. In 1972, the Park Service removed what was left of the bottom section, and restored the top 140 feet of the ladder, shown here. Devils Tower is a butte of intrusive igneous rock exposed by erosion in the Bear Lodge Mountains, part of the Black Hills, in Devils Tower National Monument, near Hulett and Sundance in Crook County, Wyoming, USA. Devils Tower (aka Bear Lodge Butte) rises dramatically 1267 feet above the Belle Fourche River, standing 867 feet from base to summit, at 5112 feet above sea level. Devils Tower was the first United States National Monument, established on September 24, 1906 by President Theodore Roosevelt.
    1709US1-3339_Devils-Tower-WY.jpg
  • At North Shore Campground, view Buffalo Bill Reservoir through the back the window of our RV in Buffalo Bill State Park, Cody, Wyoming, USA.
    20201001_160606.jpg
  • A painter captures Lower Yellowstone Falls at Artist Point along the South Rim Trail. The Yellowstone River flows through the Grand Canyon of the Yellowstone in Yellowstone National Park, in Wyoming, USA. Yellowstone River is a major tributary of the Missouri River. Yellowstone was established as the world's first national park in 1872 and was listed by UNESCO as a World Heritage site in 1978.
    20.10US1-1101.jpg
  • Lower Yellowstone Falls seen from Artist Point on South Rim Trail. The Yellowstone River flows through the Grand Canyon of the Yellowstone in Yellowstone National Park, in Wyoming, USA. Yellowstone River is a major tributary of the Missouri River. Yellowstone was established as the world's first national park in 1872 and was listed by UNESCO as a World Heritage site in 1978.
    20.10US1-1099.jpg
  • Grand Canyon of the Yellowstone River from Artist Point, South Rim Trail, Yellowstone National Park, Wyoming, USA. Yellowstone River is a major tributary of the Missouri River. Yellowstone was established as the world's first national park in 1872 and was listed by UNESCO as a World Heritage site in 1978.
    20.10US1-1093.jpg
  • Lower Yellowstone Falls seen from Artist Point on South Rim Trail. The Yellowstone River flows through the Grand Canyon of the Yellowstone in Yellowstone National Park, in Wyoming, USA. Yellowstone River is a major tributary of the Missouri River. Yellowstone was established as the world's first national park in 1872 and was listed by UNESCO as a World Heritage site in 1978.
    20.10US1-1084.jpg
  • Sky and trees reflect in Sylvan Lake, Yellowstone National Park, Wyoming, USA. Yellowstone was established as the world's first national park in 1872 and was listed by UNESCO as a World Heritage site in 1978. This image was stitched from multiple overlapping photos.
    20.10US1-0984-91-Pano.jpg
  • Roiling green pools outgas in the Mud Volcano Area, Yellowstone National Park, Wyoming, USA. Yellowstone was established as the world's first national park in 1872 and was listed by UNESCO as a World Heritage site in 1978.
    20.10US1-1039.jpg
  • Fumaroles outgas at Steamboat Point, Yellowstone Lake, Yellowstone National Park, Wyoming, USA. Yellowstone was established as the world's first national park in 1872 and was listed by UNESCO as a World Heritage site in 1978.
    20.10US1-1000.jpg
  • Magenta sunset seen from Buffalo Bill State Park, North Shore Campground, Buffalo Bill Reservoir, Cody, Wyoming, USA.
    20.10US1-0972.jpg
  • Sunset seen from Buffalo Bill State Park, North Shore Campground, Buffalo Bill Reservoir, Cody, Wyoming, USA.
    20.10US1-0960.jpg
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