A lenticular cloud is a type of cloud that forms in a lens shape, often resembling a flying saucer. These clouds typically appear at high altitudes and are created when moist air flows over mountains or hills. As the air rises, it cools and condenses, forming the cloud. Lenticular clouds are often stationary, even when the wind is blowing. They can indicate strong winds at higher altitudes and are sometimes associated with turbulence, making them important for aviation safety. These clouds can also create stunning visual displays, especially during sunrise or sunset when they catch the light.