“A fallstreak hole (also known as a cavum hole punch cloud, punch hole cloud, skypunch, cloud canal or cloud hole) is a large gap, usually circular or elliptical, that can appear in cirrocumulus or altocumulus clouds. Because of their rarity and unusual appearance, fallstreak holes have been mistaken for or attributed to unidentified flying objects.” - Wikipedia
These unusual cloud structures often have rainbow colours and what appears to be angelic figures inside them, which some believe are of supernatural origin. To me, they look kind of like sea monkeys.
