The Sailing Stones of Racetrack Playa
The rocks in this arid basin leave trails of movement behind them.
There is something utterly magical about the sailing stones of The Racetrack playa in Death Valley, California. Scattered about the desert are large rocks with mysterious trails left behind them. The trails show that these rocks have rolled and zig-zagged across the ground, sometimes for as long as 860 feet. The trails last for years before fading, so it is almost impossible to predict when the stones will move or how fast they move.
The sailing stones have been studied since the early 1900s, and researchers have suggested several theories to explain stones’ mysterious movement. In the early 2000s, a team of scientists set out to find the answers. They named a group of stones and did surveys of the area over a seven-year period. A 700-pound block dubbed Karen, which didn’t move at all while under study, was entirely missing when they returned years later. A sighting of the 700-pound Karen was made over half a mile from the survey site. Later teams have studied the phenomenon and determined that melting winter ice sheets are responsible for the movement of the stones. These stones are composed of dolomite and syenite. Studies show that the highest chance of spotting the movement of the stones is during the winter months when conditions are just right.
Know Before You Go
Visiting the Racetrack: To reach the location of moving rocks of the Racetrack Playa, drive about 2 miles south of the Grandstand parking area. The precise location of the sailing rock is always changing, but you usually get a chance of good views by walking about a half-mile towards the southeast corner of the playa. It's prohibited to drive off the established road.
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