Somewhat knowing you, I'm tempted to think an ex MILW tunnel somewhere in MT. And IF I didn't have to grab my afternoon nap today, before work tonight, I'd start searching! Maybe tomorrow AM, after I get home from work.
Holy smokes! How did you get that so fast?? The area is ripe with curves, tunnels, desert scenery and extreme elevations beyond 12000 feet. See some amazing footage of this intriguing line courtesy of Jean-Marc Frybourg: http://www.railpictures.net/showphotos.php?userid=630 Congrats, you nailed it! You get to choose the next one....
I actually started looking in Chile when you first posted the contest. But I moved my search to North America......... Then you posted the clue photo and I decided to go back to South America. The Chile/Peru reigon Just looked right.:tb-biggrin: