Loading…Loading…Loading…We value your privacy
We use cookies and ads to keep CinEvo free. You can accept or decline personalized ads.
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.
October 9, 2010
National Geographic
1 person
Robin Ward
Narrator (voice)
Acting
2020
2022
2026
2024
2023
1971
2021
2020
2017
2021
2001
2023
2022
2023
2016
2019
2010
2023
2006
2017
2003
2003
2025
2024
2014
2006
2002
2020
2002
2012
2013
2016
2021
2021
2020
1936
1991
2019
2025