Not much moves in California’s Death Valley, a seared landscape of sand dunes and dry mud subjected to daily extremes of heat and cold. But strange things are stirring in a lake bed called the Racetrack. Rocks that tumble to the valley floor have a habit of hiking across the cracked ground, some as far as 1,500 feet (457 m), leaving crooked trails during their travels. Stranger still, no one has actually witnessed the so-called sailing stones in motion. Scientists aren’t certain what’s animating these inanimate objects. Studies have ruled out earthquakes and gravity (some rocks travel uphill). One theory holds that little donuts of ice form around the stones in the winter, making them float across the flat ground. Other scientists suspect that gusting wind moves the rocks after rains slicken the lake bed.
Picture Credit : Google
