A man ducks in lit underground cavern passageway. Mammoth Cave National Park, Kentucky, USA.

A man stoops to enter Mammoth Cave. This 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 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-015.jpg
Copyright: © Tom Dempsey / Photoseek.com
Image Size: 5000x3321 / 3.5MB; http://www.photoseek.com/; cave history people energy
Contained in galleries: USA: Kentucky: Mammoth Cave

A man stoops to enter Mammoth Cave. This 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 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.