• The Historic Entrance of Mammoth Cave

    Mammoth Cave

    National Park Kentucky

Plan Your Visit

Fog at Mammoth Cave's Historic Entrance
A fog layer separates over a waiting tour as cool cave air meets summer swelter at the Historic Entrance.
 

Your visit to Mammoth Cave National Park can include cave tours, surface hikes, canoeing on the Green River, picnicking, horseback riding, bicycling, camping and more. These pages provide everything you need to begin your journey of exploration in and around the world's longest known cave.

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!