The Cave of Crystals, also known as the Giant Crystal Cave, is a cave connected to the Naica Mine at a depth of 300 meters (980 ft) in Naica, Chihuahua, Mexico. It takes the form of a chamber ...

A stunning underground cavern, hailed as the “Sistine Chapel of crystals”, has been found to have a deadly secret. The cave, which is ... full of towering, milky white crystals.