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Showing results for tags 'Cave'.
Found 2 results
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Son Doong Cave in Vietnam. Discovered in 1991 but only explored in 2009. Opening for commercial tours soon and apparently it takes 4 days 3 nights to explore.
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Hi, Forward to me by my friend and wish to share with all. We might not get a chance to visit the place in Chihuahua, Mexico but anyway, here are some pictures for your pleasant viewing. "The Naica Mine of Chihuahua, Mexico, is a working mine that is known for its extraordinary crystals. Naica is a lead, zinc and silver mine in which large voids have been found, containing crystals of selenite (gypsum) as large as 4 feet in diameter and 50 feet long. The chamber holding these crystals is known as the Crystal Cave of Giants, and is approximately 1000 feet down in the limestone host rock of the mine. The crystals were formed by hydrothermal fluids emanating from the magma chambers below. The cavern was discovered while the miners were drilling through the Naica fault, which they were worried would flood the mine. The Cave of Swords is another chamber in the Naica Mine, containing similar large crystals." Cheers
