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The 'Frozen Niagara' In Mammoth Cave National Park Is A Spectacular Underground Wonder
As home to the longest-known cave system in the world, Mammoth Cave National Park is ... with 36 miles of waterways for canoeing, kayaking, and boating on the Green and Nolin Rivers Blueway.
A 100-year-old tragic cave accident led to this national park. Here's what happened.
Floyd Collins got trapped in a Kentucky cave 100 years ago this week, an incident that led to the creation of Mammoth Cave National Park.