This is a rare meteorological phenomenon called a skypunch. 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 cloud cover. Freakishly weird! By Terry Boswell (Joshua Tree Earth & Space Museum)
Aren't they amazing? I began making up stories to fit cloud shapes when I was six and I still do this from time to time. But occasionally the clouds can speak more eloquently than I ever could...Asperatus Clouds Over New Zealand.