Mt Hood and a Lenticular Cloud . ... Credit Copyright: Ben Canales Explanation: What kind of cloud is next to that mountain? A lenticular . This type of cloud forms in air that passes over a mountain, rises up again, and cools past the dew point -- so what molecular water carried in the air condenses into droplets. ... Lenticular clouds can only form when conditions are right -- for example this is first time this astrophotographer has seen a lenticular cloud at night near Mt. Hood. ...