Stairs down to the pedestrian track underpass at the San Antonio Caltrain station, Mountain View, California.

Shot with the Nikon D70s and the 18-70mm f/3.5-4.5 zoom at 65mm, ISO 1600, f/4.5, shutter 1/160 sec. Cropping, exposure, contrast, saturation, levels, and highlights adjustments in Aperture.