• The Historic Entrance of Mammoth Cave

    Mammoth Cave

    National Park Kentucky

A Grand, Gloomy and Peculiar Place

Mammoth Cave National Park preserves the cave system and a part of the Green River valley and hilly country of south central Kentucky. This is the world's longest known cave system, with more than 400 miles explored. Early guide Stephen Bishop called the cave a "grand, gloomy and peculiar place," but its vast chambers and complex labyrinths have earned its name - Mammoth.

Features

  • Formations and shadows in Mammoth Cave

    Cave Tours

    Since 1816, visitors have toured the subterranean labyrinths of Mammoth Cave. Discover what adventures await you on our many Cave Tours.

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  • Campers at the Mammoth Cave Campground

    Camping at Mammoth Cave

    However rough you "rough it", Mammoth Cave National Park has a campsite for your adventure – in three campgrounds, the backcountry, and on the river.

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  • Flowering Flame alternative fuels logo

    Alternative Fuels at Mammoth Cave!

    A Department of Energy-Clean Cities / National Park Service partnership has brought a fleet of earth-friendly vehicles to Mammoth Cave.

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  • Canoes on Green River in Mammoth Cave National Park

    On The Rivers

    Miles of winding waters beckon along the Green and Nolin Rivers. Fish, canoe, kayak, camp and more.

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Did You Know?

Did You Know? - Mammoth Cave is the world's longest known cave.

Mammoth Cave is the world's longest known cave, with more than 400 miles of interconnected passages—so long that if the second and third longest caves in the world were joined together, Mammoth Cave would still be the planet's longest cave and have more than 100 miles left over!