“The Racetrack is an ancient dry lake bed in Death Valley, famous for its sailing stones. Located between the Last Chance Mountains and the Cottonwood Mountains, the Racetrack Playa lies at 3600′ above sea level, is about 3 miles long by 1 mile wide in size, and appears almost perfectly flat. Much of the year the Racetrack lakebed is totally dessicated and covered with small hexagonal mud patterns, although during the two rainy seasons that Death Valley experiences the playa becomes muddy and is sometimes ‘underwater’. At the south end of the Racetrack Playa are found the Racetrack’s famous ‘sailing stones’. Typically about the size of a shoe box or larger, the stones mysteriously move about the playa leaving trails behind them. Noone has actually observed any of the stones moving. One theory about their locomotion suggests that a combination of wet mud (during the winter rainy season) and high winds, perhaps combined with a thin layer of ice atop the mud, allows the stones to slide. Evidence indicates that the rocks move once every few years, and that tracks last only 4-5 years. My hunch is the occasions of the stones’ movement is a function of seasonal weather patterns and the presence or absence of sufficient water, wind and ice to trigger the sailing phenomenon.”
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