Гигантская хрустальная пещера в Мексике
Cave of Crystals "Giant Crystal Cave" at Naica, Mexico
Discovered by chance, the secret Mexican crystal caves big enough to drive a car through. Caverns discovered during mining operations contain crystals of selenite (gypsum) as large as 4 feet (1.2 m) in diameter and 50 feet (15 m) long.
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