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N.M. cavers chart unique `snowy' river of crystals

  1. iknew
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undreds of feet beneath Earth's surface, a few seasoned cave explorers venture where no human has set foot. Their headlamps illuminate mud-covered walls, gypsum crystals and mineral deposits.

The real attraction, though, is under their shoes.

A massive formation that resembles a white river spans the cave's floor. A closer examination reveals that the odd formation is an intricate crust of tiny calcite crystals.

The explorers have reached Snowy River — thought to be the longest continuous cave formation in the world.

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We should all live underground!
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