Lenticular clouds are spectacular natural formations that appear at high altitudes, usually above mountains. They are lens-shaped clouds often mistaken for UFOs or flying saucers, due to their unique appearance. They take form as a current of moist air is forced to pass above a mountain. In this situation the moist air condenses and generates a lenticular cloud.
Famous photos of lenticular clouds include Mount Fuji and Mount Shasta. In case you are a passionate photographer in search for such a phenomenon, you may just run into one while being around tall hills or mountain tops. In the mean time, have fun going through the pictures.
pictures via 1, 2, 3, 4, 5, 6, 7, 8
