Into the Lost Crystal Caves
NGC goes inside one of the greatest natural marvels on the planet - a giant crystal cave described as Superman's fortress, with magnificent crystals up to 36 feet long and weighing 55 tons. A team of experts venture into the cavern, enduring scorching-hot temperatures that could kill a human after just 15 minutes of exposure. They'll push the boundaries of physical limitation to explore a crevasse that could lead to another - and perhaps more spectacular - crystal cave.
Released:
2010
Duration:
N/A min
IMDB:
6.7 min
Production:
National Geographic
Genre:
Documentary
Country:
Canada
Stars:
Robin Ward,
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Synopsis Into the Lost Crystal Caves 2010 :
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