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This photo is from Photo Gallery: Visions of Earth—Beauty, Majesty, Wonder
Cave of Crystals, Mexico
Photograph by Carsten Peter, National Geographic
An explorer is no match for the gigantic crystals in Mexico's Cueva de los Cristales, or Cave of Crystals. In 2000, two brothers drilling for lead and silver in a remote part of northern Mexico discovered the underground crystal incubator. The largest of the crystals started to grow some 600,000 years ago.
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