Gravel spilled on the track from the ubiquitous hopper cars at Redwood Junction, Redwood City, California.

Shot with the Nikon D70s and the 18-70mm f/3.5-4.5 zoom at 55mm, ISO 400, f/9, shutter 1/500 sec. Exposure, contrast, saturation, levels, highlights, and shadows adjustments in Aperture.