Ay Carumba

Giant Crystals of Naica

The mining complex in Naica, Mexico contains some of the world's largest deposits of silver, zinc, and lead. Located beneath the Chihuahuan Desert, it also houses what may be the largest crystals ever found in a cave. Some of the gypsum crystals are as long as 36 feet and weigh up to 55 tons. The first cavern of crystals was found in 1910 and a second in 2000. The room temperature of the caverns is about 140 degrees Fahrenheit. Crystal Cave of the Giants has some nice photos. The Giant Crystal Project has more and information on other giant crystal sites.

Crystal Cave of the Giants

The Giant Crystal Project