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This national park is home to the longest cave in the world—and only 426 miles have been explored so far

Here’s how to plan a trip to Mammoth Cave National Park. Mammoth Cave National Park in Kentucky is home to the world’s longest cave system, with over 426 miles of mapped underground passages. While ...
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These 3 hidden spots in Mammoth Cave National Park feel like a secret

So many of the hidden spots in Mammoth Cave National Park lie beneath the surface. This popular park in Kentucky is home to ...
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This National Park Is Home to the Longest Cave in the World—and Only 426 Miles Have Been Explored So Far

Every single one of America’s national parks is unique, with a beauty that’s entirely its own. “The park's cave system is the longest in the world, stretching over 426 miles, and offers visitors a ...