Crystal Cave

The Cave of Crystals (Cueva de los Cristales) in Naica Mine, Chihuahua, Mexico contain the largest crystals in the world. They are formed of the selenite form of gypsum (calcium sulphate) over millions of years in the mineral-rich geothermally heated water that filled the caves. The crystals were discovered after the water was pumped out of the mine. The cave is 290 metres deep, and was discovered in 2000.



Crystal Cave

The Cave of Crystals (Cueva de los Cristales) in Naica Mine, Chihuahua, Mexico contain the largest crystals in the world. They are formed of the selenite form of gypsum (calcium sulphate) over millions of years in the mineral-rich geothermally heated water that filled the caves. The crystals were discovered after the water was pumped out of the mine. The cave is 290 metres deep, and was discovered in 2000.