A section of California's Death Valley is home to a strange phenomenon: Rocks that litter the landscape seem to move on their own, leaving long trails behind them in the cracked, bone-dry clay.
These wanderings have baffled scientists for more than five decades. Nobody has ever caught a glimpse of the stones actually moving, yet move they must, because the rocks' locations, and the trails they leave behind them, change over time.
These wanderings have baffled scientists for more than five decades. Nobody has ever caught a glimpse of the stones actually moving, yet move they must, because the rocks' locations, and the trails they leave behind them, change over time.