Startrails and snow. The image is a panorama composed of two frames, the startrail and the snowy landscape.
Canon EOS 550D, 8/2/2011 11:37 - 9/2/2011 00:29, Shutter Speed 90 sec x 35 shots (trails) + 90 sec x 2 shots (ground), Aperture Value 4.0, ISO 800, Lens Canon EF15mm f/2.8 Fisheye, Focal Length 15.0 mm