21 Most Beautiful Places to Visit in Kentucky

Mammoth Cave

Mammoth Cave, Kentucky

Source: Zack Frank / shutterstock

Mammoth Cave

The Mammoth Cave National Park is the longest known cave system in the world, with more than 400 miles of caves having been plotted to date. Keen explorers should definitely take some time to check out Mammoth Cave and its surroundings, as new caves are regularly being discovered. A United Nations World Heritage site, Mammoth Cave attracts around 400,000 tourists every year. During tours, rangers typically turn off their guiding lights, making Mammoth Cave National Park one of the few places in the world where people can experience the wonder of true darkness.

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