View from under a plane of completely transparent plexiglass, looking straight up. Many people are walking on the plexiglass. In the background is a pure blue sky, no buildings visible, no edges or separations in the plexiglass — as if it isn't there at all. The camera is very close to the people, who are in the process of walking, generally from left to right, with the soles of their shoes very close to the foreground.
