Lenticular clouds 1

Lenticular clouds 1: People wearing aluminum foil hats may say that these are carmouflaged UFO's, but in reality those are lenticular clouds above a mountain summit. These clouds are formed by wet air pushed across a mountain so that they cool and water condenses. On the other side the air warms up again and the water drops evaporate again. Nikon D200, 1/500 s, F/14.0, 40 mm, ISO 200, Sunday, January 4, 2009 12:13:58