I took this photo while a student at Covenant College (www.covenant.edu), Lookout Mountain, Georgia, U.S.A., in the late 1980's. The shadow illusion involves two shadows on the ground. One is a shadow of a lamppost. The other shadow is of me with my arm outstretched. The illusion is that my hand is holding the lamppost, when the reality is my hand was actually grasping at air. I simply moved my hand until the shadows made it appear that I was grabbing the lamppost. The lamppost and I were not even in the same location; the sun was just casting long shadows for me to play with.