
© Brian Bayliss/SWNSAlthough they look as though they are sculpted by hand, they are in fact the product of the right balance between sticky snow, strong winds and cold temperatures. These incredible pictures show rare 'snow rollers' that formed in a British field during the recent snow storm
These incredible pictures show rare 'snow rollers' that formed in a British field during the recent snow storm.
Brian Bayliss, 51, works as a forestry contractor and was driving past a field he owned when he saw the usual snow formations, about 2 - 3ft in diameter and 2ft wide.
He thought that children had been playing in his field in Marlborough, Wiltshire, so went to take a closer look but was amazed to discover there wasn't a single footprint.
Brian took some pictures and sent them to a BBC weather expert who told him they were an extremely rare meteorological condition - known as Snow Rollers.
They are a rare meteorological phenomenon in which large snowballs are formed naturally as chunks of snow are blown along the ground by the wind.
As they move they pick up snow on the way, in much the same way that the large snowballs used in snowmen are made.

© Brian Bayliss/SWNSIn order for them to form, there must be a light dusting of snow on top of an icy layer on the ground, often on a hill with no protruding vegetation. The dusting needs to be just wet enough so that it can adhere to itself but not stick to the ground, according to the National Weather Service
Comment: This is the latest in a series of storms to hit the region and dump prodigious amounts of snow since the turn of the year. Here are some of the reports of these events starting with earliest first: Weekend storms deliver 3 feet of snow to Lake Tahoe ski resorts
Storm dumps up to 18 inches of snow in a day on Lake Tahoe resorts, blizzard warning issued for next 24 hours
Storms bring 4 feet of snow in 48 hours to Sierra Nevada resorts
Lake Tahoe ski resorts receive 1 ½ feet of snow in 24 hours - just days after storms dumped 4 feet in 48 hours
Lake Tahoe ski resorts report up to 34 inches of fresh snow - more in the forecast
Sierra blizzard drops so much snow that some ski resorts close - 9 feet at June Mountain, California