I think the pattern of shadows on the snow is a unique signature of the forest they represent.
The cold weather broke today, rising 10° in about 4 hours. You might be surprised at what a difference there is between -15°C and -5°C when you're out walking. Now it's almost 'warm'! Good walking weather. And have you noticed the longer days yet? Daylight lasts a good half hour longer here, a change from 4.30 to 5 p.m. before it's started to get dark.