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.
Genre: Documentary
Stars: Robin Ward
Crew: Rosella Tursi (Editor), Manuel Gálvez (Director of Photography), Gonzalo Infante Castañeda (Director), Gary Lang (Writer), Gary Lang (Director)
Country: Canada, Mexico
Language:
Studio: National Geographic
Runtime: 1:47:31 minutes
Quality: HD
Released: Oct 09, 2010
IMDb: 5
