Visitors make their way down 280 stairs as they descend a large vertical shaft at the start of the Domes and Dripstones tour of Mammoth Cave at Mammoth Cave National Park.
Visitors make their way down 280 stairs as they descend a large vertical shaft at the start of the Domes and Dripstones tour of Mammoth Cave at Mammoth Cave National Park. Jeffrey P. Mayor Staff writer
Visitors make their way down 280 stairs as they descend a large vertical shaft at the start of the Domes and Dripstones tour of Mammoth Cave at Mammoth Cave National Park. Jeffrey P. Mayor Staff writer

Outdoors

Mammoth Cave filled with geologic wonders

August 14, 2015 10:00 PM

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