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Inside the Cueva de los Cristales of Chihuahua

submitted by gluonium

1 decade 6 years 9 months 2 weeks ago

The Cueva de los Cristales is home to the largest natural mineral crystals ever found. The crystals are made of gypsum (hydrated CaSO4) that precipitated out of groundwater over hundreds of thousands of years. The temperature inside the cave is 60C and the humidity is 100%. A miner trying to steal some of the crystals passed out, and was found thoroughly baked some time later.