SNOW DONUTS snow donuts is rare natural phenomenon that couse snow on the mountains roll and forms a donut like structure. ths hapens very rarely becasue it happens only in some specific condition. it happen only on a mountain with thicc snow but the surface of the snow almost hit melting pont. so the snow surface became wet but not so wet, so it separates the thin surface of the snow and the thicc one benath the surface, and it only hapen when the wind blows the snow from the top to the botom, and the speed of the speed is not to fast or to slow. the surface will start rolling and create the donut lke surface. snow donuts usuall found ion northen europe and north america. source: https://www.sciencealert.com/meet-nature-s-strange-self-rolling-snow-doughnuts