Imaged by Claudia Hinz (Atmospheric Phenomena) from the 1848m high Wendelstein Observatory in the Bavarian Alps, Germany. The morning shadow of Wendelstein falls over the Leitzach Valley. ©Claudia Hinz, shown with permission
|The shadow is a very long column of unlit air. It only looks triangular because we see the shadow tube sides receding away into the distance almost to a point directly opposite the sun.
Shadows and rays are one of the few atmospheric optics effects that are real in the sense that we can walk or fly around them.