By Perduejn – Own work, CC BY-SA 4.0, Link
A snow roller is a rare meteorological phenomenon in which large snowballs are formed naturally as chunks of snow are blown along the ground by wind, picking up material along the way, in much the same way that the large snowballs used in snowmen are made. Unlike snowballs made by people, snow rollers are typically cylindrical in shape, and are often hollow since the inner layers, which are the first layers to form, are weak and thin compared to the outer layers and can easily be blown away, leaving what looks like a doughnut or Swiss roll. (Source Wikipedia)
By Salvi 5 – Own work, CC BY-SA 3.0, Link
I, Petr Dlouhý [GFDL, CC-BY-SA-3.0 or CC BY-SA 2.5-2.0-1.0], via Wikimedia Commons
By Slate99slate – Own work, CC BY-SA 3.0, Link
By Perduejn (Own work) [CC BY-SA 4.0], via Wikimedia Commons
e MORFES 
Hi thankks for sharing this
Reblogged this on sydney lancaster: hand & eye and commented:
Always good to remind myself to enjoy the beauty of winter! It take so much less energy than complaining about the cold. Thanks to eMorphes for posting this on (for me) a cold winter day.
Fascinating!
Un’interpretazione fanastica della neve, che fa rimanere a bocca aperta per lo stupore!
Buon pomeriggio,silvia
Very strange and amazing ! 🙂
Nice! Very beautiful, this effect! 🙂