Explorers Vie To Find The Deepest Place On Earth04:56
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(Sergio Garcia Dils courtesy of Alexander Klimchouk and the Call of the Abyss Project)
(Sergio Garcia Dils courtesy of Alexander Klimchouk and the Call of the Abyss Project)

In 2004, two teams of scientist-explorers delved into caves in southern Mexico and the former Soviet republic of Georgia to find out which one went the farthest down. We revisit a conversation we had with James Tabor, who chronicled the quest in the book, "Blind Descent: The Quest to Discover the Deepest Cave on Earth" which was recently released in paperback.

This segment aired on April 7, 2011.

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