Going to Mammoth Cave National Park

What to do in Mammoth Cave National Park

From the beginning, underground explorers doubted that they would ever find the end of Kentucky's Mammoth Cave. With more than 365 miles explored and 379 feet deep, Mammoth Cave is known as the longest cave in the world—the Ukrainian cave Optimisticeskaya comes in a distant second at just a quarter of Mammoth's length—and exploration continues on today.

In Mammoth's vast subterranean world, there are giant vertical shafts, from the towering 192-foot-high Mammoth Dome to the 105-foot-deep Bottomless Pit. Some passages and rooms are decorated with sparkling white gypsum crystals, while others are filled with the colorful, sculpted shapes of stalactites, stalagmites, and other cave formations. Underground rivers with names like Echo River and the River Styx flow through Mammoth's deepest chambers. And in the cave's...

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