National Park Service, U.S. Department of the Interior National Park Service arrowhead
Mammoth Cave Guide Johnny Merideth leads Wild Cavers along Robertson Avenue, nearing the end of the 5-mile, 6-hour tour. Image courtesy of Gary Berdeaux.

MAMMOTH CAVE NATIONAL PARK

The Frozen Niagara tour descends into Mammoth Cave through a series of pits and domes.
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www.nps.gov/parkoftheweek/photo-362.htm Updated: Monday, 18-Apr-2005 12:15:08 EDT
   
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