Mammoth Cave National Park

Home to the longest cave system on earth, Mammoth Cave National Park has more than 400 miles of surveyed passageways. Mammoth is at least three times longer than any other known cave, with vast interior cathedrals, bottomless pits and strange, undulating rock formations. Guided tours delve into the spookily beautiful underworld.


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Mammoth Cave, Kentucky

National Parks

The world's longest cave system grows as new underground passages found in Mammoth Cave

Sep 17, 2021 • 2 min read


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