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Rock Paintings at Hueco Tanks Reveal Clues About Ancient Visitors

February 28, 2019 | By Robyn Ross

At Hueco Tanks, 30 miles northeast of El Paso, four mountains of granite-like rock soar out of the desert landscape. The surface of the rock is covered with huecos—Spanish for hollows—formed through millions of years of erosion. Because the huecos hold water, this oasis has attracted humans for more than….

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