No, that stone in today"s homepage image didn"t get there by itself. Or did it? Not only is Death Valley one of the hottest places on Earth, it also boasts a mysterious geologic phenomenon—rocks that drift across the exceptionally flat desert floor, seemingly under their own power. The rocks here at Death Valley"s Racetrack Playa are known as "sailing stones" and they can vary in size from a few ounces to hundreds of pounds. As seen in our image, the stones leave long trails behind them as they move across the scenic dry lakebed.
Rocks on the move
Today in History
More Desktop Wallpapers:
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World Rivers Day
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Get the bear facts
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Celebrating 78 years of Everglades National Park
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US Coast Guard: Protecting us for 105 years
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Victory Day in Valletta
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Falling for the Canadian Rockies
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Native American Heritage Month
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Celebrating Bike to Work Week, May 14-18
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International Moon Day
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World Rhinoceros Day
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Katahdin Woods and Waters National Monument anniversary
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Río Negro, Amazon basin, Brazil
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A lush, green escape
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Natural Bridges State Beach in Santa Cruz, California
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Bringing together history and technology
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The party’s just starting
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World Migratory Bird Day
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Lower Antelope Canyon, Arizona
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50 years of World Heritage Sites
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Patriot Day
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Winterpret on ice
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‘Hello’ from zero degrees longitude
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Happy birthday to Crater Lake National Park
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Ancient storage in the Grand Canyon
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First day of National Park Week
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Red-necked grebes during breeding season
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Our Lady of the Rocks
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Emerald Bay and Fannette Island, Lake Tahoe, California
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It s Independence Day
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Composite image of a lunar eclipse
Bing Wallpaper Gallery

