Kenny Broad

Up to Date
6:00 pm
Tue March 13, 2012

Extreme Cave Diving: Worth The Risks?

National Geographic

There's a line of work where the risks include toxic layers of hydrogen sulfide and maze-like passageways.  (No, we're not talking the halls of Congress.) It's the exploration of underwater caves and blue holes. Many consider survival to be is the mark of a successful dive ... so, are the risks worth it?

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