Deadly Crystal Cave

Tags:: Science Technology: Exploration Adventure: Expeditions Gypsum Mars NASA Crystal Surreal Landscape Chris McKay Pennies Boston Stein-Erik Lauritzen Geolog

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NationalGeo...

International
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Added: 15-Oct-08

A team of scientists explore a Mexican cave filled with giant crystals; some of the largest ever discovered. With temperatures near 120 degrees and over 80 percent humidity, the cave is one of the deadliest environments on earth. Giant Crystal Cave : SUN OCTOBER 12 9P et/pt : channel.nationalgeographic.com