Interesting cloud

I think that's actually a UFO. Those UFO's are often confused for clouds, leading to many peoples skepticism on the existance of extra terrestrials.

In reality, it is a lenticular cloud formed by the air flow over the mountain. I couldn't give you all the specs so I'll leave that to someone else. Believe it's just the air being compressed as it rises over the mountains?
It indeed looked like UFO.. EMHI has a picture of lenticular cloud on their web site(they have cloud school on their site) but that cloud was more dense(and mountain was photographed more far).