Mark Taylor / Sliding Stone or Moving Rock of Racetrack Playa, Death Valley, California, USA

Floris van Breugel / Long exposure to capture star trails circling around the North Star, Polaris, at the "Racetrack," a remote desert playa (dry lake bed) in Death Valley National Park, famous for its mysterious moving r...

Jack Dykinga / Boulder with zig-zag trails across a dry lake bed, sunset, Ubehebe Peak in distance, The Racetrack Playa, Death Valley National Park, California

Jack Dykinga / Boulders with trails across a dry lake bed, sunrise, The Racetrack Playa, Death Valley National Park, California

Jeff Foott / Racetrack Playa with mysterious 'sailing stone', Death Valley National Park, California

Jeff Foott / Racetrack Playa with mysterious 'sailing stones', Death Valley National Park, California

Jeff Foott / Racetrack Playa with mysterious 'sailing stones', Death Valley National Park, California

Jeff Foott / Racetrack Playa with mysterious 'sailing stone', Death Valley National Park, California

Jeff Foott / Racetrack Playa with mysterious 'sailing stone', Death Valley National Park, California

Mark Taylor / Track left by sliding stone or moving rock of Racetrack Playa, Death Valley, California, USA

Mark Taylor / Sliding Stone or Moving Rock of Racetrack Playa, Death Valley, California, USA

Mark Taylor / Sliding Stone or Moving Rock of Racetrack Playa, taken at night by moonlight, with the stars of the Milky Way in the background, Death Valley, California, USA