Naica, la grotte aux cristaux géants (2009)

A team of international scientists risk their lives to explore the Naica Crystal cave, where the biggest crystals on Earth have been discovered. They enter this fragile yet lethal environment, with the highest temperatures and 80% humidity, where the human body would not survive for more than 8 minutes. This is the story of a journey to the center of the Earth, where a handful of scientists will try to unlock the cave's secrets.