A jet contrail in a clear sky above a snow-covered pine forest

Winter scene, Koenigsforst

Nikon D50, Nikkor 18-70mm F/3.5-4.5 G, polarising filter

18mm, f/3.5, 1/30s, ISO 200. Date: 2010-12-25

sharpening

Königsforst, just outside Cologne. This was taken on Christmas Day 2010, as my relatives and I walked back from the restaurant where we had our Christmas dinner.