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America's Largest Manmade Crystal Cave Is A Sparkling Sanctuary Underground In Tennessee
Visitors seeking unique and quirky attractions should explore America's largest man-made crystal cave ... Not only is the pond and rock entry inviting, the cave is so amazing!" ...
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Cave of Crystals: The deadly cavern in Mexico dubbed 'the Sistine Chapel of crystals'
The Cave of Crystals is an underground cavern filled with tree-size gypsum crystals, including some of the largest natural ...