Streetlights illuminating the platform of the 22nd Street Caltrain station, San Francisco. 22nd Street station sits beneath the Interstate 280 freeway, hence the concrete sky.

Shot with the Nikon D70s and the 18-70mm f/3.5-4.5 zoom at 70mm, ISO 1600, f/7.1, shutter 1/160 sec. Exposure, saturation, levels, and shadows adjustments in Aperture.