Into the Lost Crystal Caves

NGC goes inside one of the greatest natural marvels on the planet a giant crystal cave described as Supermans fortress with magnificent crystals up to 36 feet long and weighing 55 tons A team of experts venture into the cavern enduring scorchinghot temperatures that could kill a human after just 15 minutes of exposure Theyll push the boundaries of physical limitation to explore a crevasse that could lead to another and perhaps more spectacular crystal cave