View north through Caltrain tunnel #2, from the south portal. Something like this really shows off the perspective foreshortening that the telephoto lens causes — the far end is nearly a quarter mile away, but here it looks like just a little hop.

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 and highlights adjustments in Aperture.