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A thousand hidden caves may lie inside the Grand Canyon
HERE’S THE INTERESTING PART
Just in case staring at a massive, existential hole in the ground wasn't thrilling enough, park officials estimate there are roughly 1,000 uncharted caves lurking within the canyon walls. While a few hundred have been safely documented, the vast majority remain completely untouched, sitting in the dark just waiting to eventually swallow an overly adventurous tourist who ignored the warning signs.
One discovery leads to another.
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