This is a close-up of the shadow of an old ranch fence on the barn at Sea Ranch.
Shadows interest me because a shadow usually displays more contrast than the object creating the shadow. The great dynamic range between a shadow and the background on which the shadow is projected can be used to create interesting compositional effects.
Related images: Bridge Shadow, Papaver and Shadow, Blind Shadow, Shadows on a Wall.
[105mm, 157.5mm in 35mm equivalent terms, 1/4 of a second at f/32 and ISO 100, tripod mounted.]