Cave of the Crystals

crystal cave

Naica

Cave of the Crystals (Cueva de los Cristales) is a cave connected to the Naica Mine 300 metres (980 ft) deep in Chihuahua, Mexico, discovered in 2000. The main chamber contains giant selenite crystals, some of the largest natural crystals ever found. The cave’s largest crystal found to date is 11 m (36 ft) in length, 4 m (13 ft) in diameter and 55 tons in weight. The cave is extremely hot with air temperatures reaching up to 58 °C (136 °F) with 90 to 100 percent humidity.

The cave is relatively unexplored due to the extreme temperatures and high humidity. Without proper protection people can only endure approximately ten minutes of exposure at a time. Additionally, the caves are accessible today only because the mining company’s pumping operations keep them clear of water. If the pumping were stopped, the caves would be submerged.

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