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 ...

The Blue Hole of Santa Rosa, for example, is an unassuming New Mexico lake that's actually ... to be the purest form of selenite crystal in the world. The Cave of the Crystals, or Cueva de los ...

Naica’s Crystals Cave, maybe the most amazing underground wonder on Earth, was discovered by chance inside the deep mine of Naica, in the State of Chihuahua, Mexico. It is a true ... ranging from ...