Miners drilling through limestone in Chihuahua, Mexico, broke into an extraordinary chamber in 2000 and found something that defied geological expectations: gypsum crystals taller than telephone poles ...

Add Yahoo as a preferred source to see more of our stories on Google. The interior of the Cave of Crystals in Mexico with a person for scale. The Cave of Crystals is an underground cavern filled with ...

Yeah, National Geographic is showing a documentary about a cave in Mexico with crystals. Apparently, the cave is also hot. Have at it Lounge.

The Cave of Crystals in Chihuahua, Mexico, is buried almost 1,000 feet (300 meters) beneath Earth's surface and contains giant gypsum crystal beams that are up to 37 feet (11 m) long. When you ...