The surface of Mammoth Cave National Park ... Complete your underground trips with a river trip or a walk on the River Styx Spring Trail. The least arduous cave tour (0.25 mile, 75 minutes ...

Explore Mammoth ... for cave wildlife in the world. It may be difficult to think of caves as spacious and grand, but these are no ordinary caves. Humans first discovered this complex limestone ...

polluting industrial facilities across Kentucky and the surrounding regions from the Southeast to the Ohio River Valley, continue to threaten Mammoth Cave’s biodiversity, vistas and visitors’ health.