The Cave of Crystals is an underground cavern filled with tree-size gypsum crystals, including some of the largest natural crystals ever found. The cave is located around 980 feet (300 meters) deep ...
In January 2006 Speleoresearch & Films and the Team la Venta started a three year exploration campain to discover the Naica cave, Chihuahua, Messico. "It seems like walking into an oven. You're hit by ...
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