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Family builds luxury CAVE HOME (1500 sq ft) in Ohio

Bryant and Amy purchased a property for a weekend getaway for their young family, discovering a hidden treasure: a huge cave. Inspired by this unique find, they built a luxury, modern cave home ...
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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.