Caltrain locomotive glimpsed through an alley off Pacific Blvd., San Mateo, California.

Shot with the Nikon D70s and the 18-70mm f/3.5-4.5 zoom at 45mm, ISO 400, f/9, shutter 1/500 sec. Straightening, white balance, exposure, saturation, highlights, and levels adjustments in Aperture.