A mysterious sight in the skies over Colorado last week wasn't a plane or UFO, but actually a particular type of cloud that tends to form near mountains.

Beautiful clouds flowed over a mountain like a waterfall in Thailand. Footage shows the whispy formation that appeared to cascade over the body of land, as seen from a tourist camp in Uttaradit ...

Beautiful, long-lasting lenticular clouds formed over the mountains of Flagstaff, Ariz., on Thursday afternoon and persisted until sunset. The clouds were captured in a timelapse video by the ...

A lenticular cloud is a lens-shaped cloud that normally develops on the downwind side of a mountain or mountain range. This occurs when stable, moist air flows over a mountain, creating a series ...

Keep an eye out for lenticular clouds above the mountains, because they can show conditions are favorable for downslope flow. The next storm system that arrives late week could produce this effect.

Some might say that without clouds, Huangshan Mountain will lose some of its spirits. The clouds, wind and rains in the Huangshan Mountain area are inseparable, composing a masterpiece of nature.

Not even a solid black mountain range stretching 51 feet in the air and a pile of flat, oddly bending clouds can steal the attention of harried congressional staffers. They walk by the 38-ton ...