Mammoth Cave

Inside Mammoth Cave

Beneath the sandstone-capped ridges in central Kentucky lies the most extensive cave system on Earth. With 563 km/ 350 miles of surveyed passageways Mammoth Cave is at least three times longer than any other known cave.

Green River

There are two worlds to explore in Mammoth Cave National Park: the extraordinary world of the underground and rugged, forested hill country on the surface. This is one ecosystem linked by water. The Green River is central to Mammoth Cave system.