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Amazing caves of giant crystals inside the Naica Mine in Chihuahua, Mexico

Selenite crystals in the Naica Mine in Chihuahua, Mexico. Must visit!

Giant Crystal Cave - A cave connected to the Naica Mine in Naica, Chihuahua, Mexico. Giant selenite crystals (gypsum), some of the largest natural crystals ever found. The maximum age is dated about 500,000 years. (See the little man at the bottom left!)

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