It is a common experience for people to see different shapes and figures in the clouds, but how often do they see clouds that resemble UFOs? These stacks of disk-shaped clouds are called lenticular clouds. They form high in the sky and definitely have a striking appearance, especially when tinged with sunlight.
Here are a few examples of these “UFO clouds”:
Lenticular clouds form over Mt. Rainier, Washington, United States
Amandabooberry (Own Work) via Wikipedia
You can see more fantastic photos of lenticular clouds at this link: 20+ Dramatic Shots of Lenticular Clouds. Enjoy!