Add Yahoo as a preferred source to see more of our stories on Google. The interior of the Cave of Crystals in Mexico with a person for scale. The Cave of Crystals is an underground cavern filled with ...
Deep beneath the sun-scorched plains of northern Mexico, an astonishing underground cave defies belief. In the heart of the Naica Mine, a silver and lead extraction site in Chihuahua, miners once ...
More than 900 feet beneath a mountain in northern Mexico, there’s a hidden chamber that almost doesn’t look real. Massive, glass-like crystals stretch in every direction, some as long as a city bus.
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