Mammoth Cave National Park

National Park · KY · nps.gov page

Looking out from a large cave entrance with falling water and green trees shown over the entrance.
Two worlds, one aboveground and the other below, collide at the largest natural entrance to Mammoth Cave.Photo: NPS Photo / J. Cooper

Rolling hills, deep river valleys, and the world's longest known cave system. Mammoth Cave National Park is home to thousands of years of human history and a rich diversity of plant and animal life, earning it the title of UNESCO World Heritage Site and International Biosphere Region.

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Photos

Trees with colorful autumn leaves surround a large pond and reflect off of its surface.
Autumn arrives at Sloans Crossing Pond Trail, an accessible boardwalk path.Photo: NPS Photo / J. Wheet
A long staircase travels down a slope into the dark cave opening.
The Historic Entrance to Mammoth Cave has welcomed explorers for centuries.Photo: NPS Photo/ Thomas DiGiovannangelo
A large stacked stone pillar reaches the flat ceiling containing signatures in a cave passage.
Over two hundred years of guided tours leads to the history of Mammoth Cave.Photo: NPS Photo/ Jackie Wheet
A long cave passage with an oval shape.
The network of cave passages in the Mammoth Cave system stretches over 400 miles.Photo: NPS Photo/ Thomas DiGiovannangelo
A wooden boardwalk leads into the forest.
The half-mile Heritage Trail leads to panoramic views of the Green River.Photo: NPS Photo/ Thomas DiGiovannangelo
A small white church building with yellow flowers in the foreground.
Three historic church structures still stand, shedding light on the pre-park communities that once existed here.Photo: NPS Photo/ Thomas DiGiovannangelo
A view of a river valley with hills covered in trees. A blue sky with white clouds stands above.
Rolling hills and valleys can be seen from many of the overlooks in the park.Photo: NPS Photo/ Thomas DiGiovannangelo

Park information and photos come from the National Park Service. This is not an official NPS site.