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Mammoth Cave offers a colossal underground maze of geological wonders and exploration

August 16, 2010, 1:05 pm
If the labyrinth of subterranean passages at Mammoth Cave National Park were unraveled to form a single tunnel stretching to the northeast, visitors from Columbus could walk the entire way to the park underground. More than 300 miles of passageway have been discovered, making this the longest cave system in ...

Mammoth Cave : Mammoth Cave National Park
Mammoth Cave National P...

Mammoth Cave
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