Twilight of the Giants
January 20, 2010 5:36 PM Subscribe
posted by Hardcore Poser (20 comments total)
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Last chance to see: Video of Mexico's Naica Cave of Crystals
, and previously
This magma-heated cave in the Chihuahua region is in a working silver and lead mine. The cave is known for its extraordinary selenite crystals; some having grown over 10 metres (33 feet) long. It is so hot and humid inside that human lungs soon become the coolest surface. With the rapid condensation one can literally drown breathing the air within minutes. The logistics of safely entering it are "mind-boggling."
Since the mining company is not making any money keeping the cave open, it is soon to be re-flooded with water. Fortunately scientists had enough time to find out a while back how it formed
. And the geology of the area suggests that there could be more crystal caves nearby.