Last vestiges of the old SP Tanforan branch line, alongside the mainline in San Bruno, California. (The “X” sign has nothing to do with that; it’s a warning to locomotive engineers of an upcoming grade crossing.)

Shot with the Nikon D70s and the 18-70mm f/3.5-4.5 zoom at 70mm, ISO 400, f/10, shutter 1/400 sec. White balance, contrast, highlights, and levels adjustments in Aperture.