The Mystery of the Desert Stones

For years, scientists have wondered why massive stones – some as heavy as 250 pounds (113 kg) – seem to move themselves across the floor of California’s Death Valley:


They think that they now have an answer: that the stones move because of the sheer flatness of the area combined with thin layers of ice which form at night, the unique soft clay in the area, and 90mph winds.

The stones – which can move up to 350 yards (320m) a year – have been a mystery for decades.

Read more here.

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