Have you ever heard about a big stone moving without someone moved it? Sounds freaky, right? Now now, it just a common phenomenon (Are you sure?). It's called sailing stone. Now this is the explanation for this phenomenon.
The mysterious moving stones of the packed-mud desert of Death Valley (Eastern California's Mojave Desert)have been a center of scientific controversy for decades. Rocks weighing up to hundreds of pounds have been known to move up to hundreds of yards at a time. Some scientists have proposed that a combination of strong winds and surface ice account for these movements. However, this theory does not explain evidence of different rocks starting side by side and moving at different rates and in disparate directions. Moreover, the physics calculations do not fully support this theory as wind speeds of hundreds of miles per hour would be needed to move some of the stones.
Although there have been many theories about how the rocks might be moving on their own including dust devils, hurricane-force winds, films of slippery algae or thick sheets of ice -- none had ever been confirmed, nor had any human seen the rocks actually moving.
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