Posted : August 2014
Author : the admin
DEATH VALLEY NATIONAL PARK, Calif. (AP) - For years scientists have theorized about how large rocks - some weighing hundreds of pounds - zigzag across Racetrack Playa in Death Valley National Park, leaving long trails etched in the earth. Now two researchers at the Scripps Institution of Oceanography at the University of California, San Diego, have photographed these "sailing rocks" being blown by light winds across the former lake bed.
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