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  2. Mammoth Cave National Park - Wikipedia

    en.wikipedia.org/wiki/Mammoth_Cave_National_Park

    Tourists inside the cave. The park's mission is stated in its foundation document: [7] The purpose of Mammoth Cave National Park is to preserve, protect, interpret, and study the internationally recognized biological and geologic features and processes associated with the longest known cave system in the world, the park’s diverse forested karst landscape, the Green and Nolin rivers, and ...

  3. You have to look beneath the surface to fully appreciate ...

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    The first known formal tour of Mammoth Cave was given in 1816, long before it became part of the National Park Service in 1941. One of Mammoth Cave’s most famous early guides was an enslaved man ...

  4. File:Gypsum speleothem (Cleaveland Avenue, Mammoth Cave.jpg

    en.wikipedia.org/wiki/File:Gypsum_speleothem...

    Cleaveland Avenue is at Level C in the Mammoth Cave system. Level C passages started forming about 1.9 million years ago. A subterranean river used to flow through the passage. Cleaveland Avenue is accessible to modern tourists on the Grand Avenue Tour, the Wild Cave Tour, and the Cleaveland Avenue Tour. Date: 7 July 2007, 11:38: Source

  5. Fisher Ridge Cave System - Wikipedia

    en.wikipedia.org/wiki/Fisher_Ridge_Cave_System

    The Fisher Ridge Cave System is a cave system located in Hart County, Kentucky, United States, near Mammoth Cave National Park. As of November 2019 it had been mapped to a length of 130.001 miles (209.216 km), making it the fifth-longest cave in the United States and the tenth-longest in the world .

  6. If you visit Mammoth Cave National Park - AOL

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  7. List of longest caves in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_longest_caves_in...

    partly within Mammoth Cave National Park: 6 Helms Deep Cave 112.8 km (70.09 mi) [14] [15] Perry County, Tennessee: None.Entrances are on private property. Restricted access, requires authorization 7 Great Savannah Cave System,(Maxwelton Sink Cave [16]-McClung Cave [17]) 82.5 km (51.26 mi) [18] near Greenbrier County, West Virginia