• The Historic Entrance of Mammoth Cave

    Mammoth Cave

    National Park Kentucky

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Civilian Conservation Corps (CCC) Image Collection
Hosted by Western Kentucky University

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!