Under yellow fall tree leaves, water drips into Historic Entrance of Mammoth Cave National Park, Kentucky, USA

Stairs descend the Historic Entrance of Mammoth Cave, which drips with water and is surrounded by trees with yellowing fall leaves. Mammoth Cave National Park was established in 1941 in Edmonson County, Kentucky, USA and was declared a UNESCO World Heritage Site in 1981 and international Biosphere Reserve in 1990. With over 390 miles (630 km) of passageways, the Mammoth-Flint Ridge Cave System is the longest known in the world. Mammoth Cave developed in thick Mississippian-aged limestone strata capped by a layer of Big Clifty Sandstone. Descending limestone layers include the Girkin Formation, Saint Genevieve Limestone, and Saint Louis Limestone.

Add to Cart Add to Lightbox Download

Filename: 10MAM-102.jpg
Copyright: © Tom Dempsey / Photoseek.com
Image Size: 5000x3321 / 4.5MB; http://www.photoseek.com/; cave history water
Contained in galleries: USA: Kentucky: Mammoth Cave

Stairs descend the Historic Entrance of Mammoth Cave, which drips with water and is surrounded by trees with yellowing fall leaves. Mammoth Cave National Park was established in 1941 in Edmonson County, Kentucky, USA and was declared a UNESCO World Heritage Site in 1981 and international Biosphere Reserve in 1990. With over 390 miles (630 km) of passageways, the Mammoth-Flint Ridge Cave System is the longest known in the world. Mammoth Cave developed in thick Mississippian-aged limestone strata capped by a layer of Big Clifty Sandstone. Descending limestone layers include the Girkin Formation, Saint Genevieve Limestone, and Saint Louis Limestone.