sliding rocks on the racetrack (death valley)

Sailing Stones on the Racetrack dry lake in Death Valley (California)

Those two rocks are crossing paths.­

Sailing stones are rocks that move in long tracks on the smooth and perfectly flat surface of a dry lake, without human or animal intervention.­ The rocks are most likely propelled by strong winds, after winter rains made the mud soft and slippery.­

For more photos and information about the Racetrack sailing stones, go to the Sailing Stones photo series.