This picture and its partner picture 'Winter Trees' feature the uncommon winter phenomenon of a Sundog that is visible as a second sun at the right-hand side of the picture. Sundogs, also called ‘mock suns’, are coloured, luminous spots caused by the refraction of light by six-sided ice crystals in the atmosphere. Sundogs are only visible when the sun is near the horizon and on the same horizontal plane as the observer and the ice crystals. As sunlight passes through the ice crystals, it is bent by 22 degrees before reaching our eyes. The picture was captured on a late November afternoon as the mist rose from the ground and began to form ice crystals in the air. I was lucky to be there. Available as an A3 (approx) size print £85
