Cueva de los Cristales (Naica)

200030 m longMexico

CountryMexico

RegionChihuahua

Discovered2000

Size/Depth30 m long

About Cueva de los Cristales (Naica)

Contains the largest natural crystals ever found, up to 12 m long. Temperature is 58C with 99% humidity. Lethal after 10 minutes without cooling suits. The crystals are selenite, a form of gypsum. The cave was flooded again in 2015 to preserve them.

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