Lenticular clouds are known for their curved, flying saucer-like appearance. They are usually found at heights between 2,000 and 5,000 meters.

A rare cloud formation resembling an unidentified flying object (UFO) was spotted floating over Bursa, Turkey, on Thursday morning. According to The Guardian, the almost circular cloud, known as a lenticular cloud, remained intact for about an hour. Several internet users captured the rare phenomena on their phones. It appeared at sunrise and featured a large hole in the middle.