Colorful clouds. The shot was taken from Chalandri, Attiki. See also: pic1, pic2, pic3, pic4.
Canon EOS 550D, 17/12/2011 16:35, Shutter Speed 1/3200, Aperture Value 5.6, ISO 100, Lens Canon EF70-200mm f/4L USM, Focal Length 159.0 mm