Submitted by Louisville Mega Caverns
Guides use Jeeps to explore the miles of mined caverns in Louisville Mega Cavern's 100-acre complex of the former underground limestone mine.
It was all going to be perfectly safe, everyone assured us. The slender steel cables we'd be harnessed to were rated to carry 13 tons, and the 8-foot-long steel bolts anchoring them into the limestone walls could hold 5 tons.




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Scripps Interactive Newspapers Group
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