Cave of the Crystals
Cave of the Crystals (Spanish: Cueva de los cristales), also known as Naica Cave (Spanish: Cueva de Naica) or the Giant Crystal Cave, is a cave connected to the Naica Mine at a depth of 300 metres (980 ft), in Naica, Chihuahua, Mexico. It takes the form of a chamber within the limestone host rock of the mine, and is about 109 metres (358 ft) long with a volume of 5,000 to 6,000 cubic metres (180,000 to 210,000 ft3).