Sailing stones, also known as sliding rocks, rolling stones, and moving rocks, are a geological phenomenon where rocks move and inscribe long tracks along a smooth valley floor without human or animal intervention. Instead, rocks move when large ice sheets a few millimeters thick floating in an ephemeral winter pond start to break up during sunny days. These thin floating ice panels, frozen during cold winter nights, are driven by wind and shove rocks at up to 5 m/min.
Patrick B
Ever see up- hill rolling snowballs? I have personally seen it in Wyoming! For real! The temps have to be just right, above 40′, after a semi-wet snow fall, combined with high winds. Because the snow is warning up, and the wind is blowing quite strong, (sometimes 35-45 mph) it creates snowballs, and the wind blows them up-hill, looking just like the rocks, or in this case, up-hill rolling snowballs. I have still pictures! I have experienced it twice in 10 years. Not terribly rare, but neat so experience! Pat
Debbie C
I totaly believe you!
Debbie C
https://www.livescience.com/37492-sailing-stones-death-valley-moving-rocks.html