In gallery: Clouds Contrails Distrails

Dissipation trail in supercooled altocumulus deck, caused by a passing airplane. Such cloud holes are most likely near civil or military airports, since there the airplanes will more likely be intersecting such a cloud layer and cause glaciation. The cloud hole in the background formed earlier and had already partially filled up with new altocumulus at the time the photo was taken.

New Mexico (USA)