Shadows are created when a light source is blocked by an image; the resulting area is a dark shape or a silhouette. Our own shadows can sometimes appear ominous and mysterious because they are devoid of features; we may not notice them all the time but they are either in front of us, behind us, or near us, depending on the light source. This ambiguity of presence that shadows offer with their shape and form has fascinated many artists in the past.
