Watch Streaming Into the Lost Crystal Caves (2010) : HD Free Movies 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. | ||
| Release Date | : | Oct 09, 2010 |
| Runtime | : | |
| Genres | : | Documentary |
| Production Company | : | National Geographic |
| Production Countries | : | Canada, Mexico |
| Casts | : | Robin Ward |
| Plot Keywords | : | cavern, crystal, geology, crystal cave, nature documentary |
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