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I Love Geology

Cave of the Crystal Giants...


The Naica mine in Chihuahua, Mexico is best known for its extraordinary selenite crystals. They are some of the largest ever discovered - reaching 4 feet (1.2 meters) in diameter and 50 feet (15.2 meters) in length.

The magma beneath the cave makes it unbearably hot and humid. As a result, the cave remains largely untouched.
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pennynoodles · 56-60, F
Wow, what a place to visit. Have you ever been to the salt mines in Poland?
sciguy18 · M
@pennynoodles I have not been to the salt mines in Poland. Have you?