Mammoth Cave National Park
Home to the world’s longest cave system, Mammoth Cave National Park offers awe-inspiring underground tours and outdoor adventures in Kentucky.
Home to the world’s longest cave system, Mammoth Cave National Park offers awe-inspiring underground adventures and a rich history of exploration.
Location
Located in central Kentucky, the park is within driving distance of major cities like Louisville and Nashville.
Quick Facts
Size: 52,830 acres
Year Established: 1941
Unique Features: Over 400 miles of explored cave passages
Explore the fascinating underground world, learn about its rich history, and enjoy above-ground hiking and camping opportunities.
Mammoth Cave National Park is home to the longest cave system in the world, with over 420 miles of mapped passageways—and explorers are still discovering more. The cave's vast network of tunnels and chambers formed over millions of years as water slowly dissolved the region’s limestone. This underground wonder has been a site of human activity for thousands of years, with evidence of ancient Native American exploration dating back more than 5,000 years. Despite its dark, winding passages, the cave supports unique ecosystems, including eyeless fish and albino shrimp adapted to its lightless environment.