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.