Tail end of a Caltrain pushing north, seen through the San Francisquito Creek bridge, Palo Alto. A little bit of red and green for Christmas day!

Shot with the Nikon D70s and the 18-70mm f/3.5-4.5 zoom at 70mm, ISO 400, f/4.5, shutter 1/125 sec. Exposure, contrast, saturation, levels, highlights, and color adjustments in Aperture.