Have you ever heard "MYSTERY of MOVING DEATH VALLEY ROCKS"

If yes then here's is a good news that it aint a mystery anymore.... 

If no then check this out !!!

 

 

Sailing stones

 

 

History:

 

Moving death valley rocks traditionally called as "Sailing stones" or "sliding rocks"  and the list goes on. Coming to its history these
rocks move and inscribe long tracks along a smooth valley floor without human or animal intervention.

The stones move only every two or three years and most tracks develop over three or four years. Stones with rough bottoms leave straight groove tracks while those with smooth bottoms tend to wander. Stones sometimes turn over, exposing another edge to the ground. A solution to this mystery of why rocks move randomly across an isolated patch of California's Death Valley finally cracked on Thursday, when researchers published a study showing the driving force was sheets of wind-driven ice.

How is it solved... 

Paleobiologist Richard Norris of the Scripps Institution of Oceanography, who led the study, saw the rare phenomenon first-hand last December while standing with his cousin, engineer James Norris, at the spot.