Last weekend I was in Colorado and New Mexico riding the Cumbres & Toltec Scenic Railway on a special train trip. We got a treat as we were being headed by the oldest locomotive they have, a K-27 from 1903. Another treat we got was being able to photograph the train as it came out of the tunnel. I was able to get this image of it as it was entering the tunnel. Bet you can guess what my next train image will be. :-) To bring out the rock texture in the tunnel I processed this with an HDR effect. It gave it a look like William Henry Jackson's Lithographs which I quite liked.