azog from the Hobbit concept art. They have the books on all the art and stuff that do for that hobbit and i would highly recommend anyone who is interested in concept work to check it out. Called the Hobbit chronicles, at and design.
This is a rare meteorological phenomenon called a ‘SKY PUNCH’. When people see these,they think it’s the end of the world. Ice crystals form above the high-altitude cirro-cumulo-stratus clouds,then fall downward, punching a hole in the cloudcover.