Of rock tunnel from the bottom of Toltec Gorge?
Well, I've always known that he painted in the train (way up on the right). But according to John Fielder's new book 'Colorado 1870-2000 II' (page 113), "The climb to Toltec Tunnel is dramatic and thrilling, but it's not where Jackson indicates. He drew the train
and tunnel on the photo negative later!"
Now I've heard of some people try to find that exact location like Fielder did. Is it true that the east portal is not there? Where was this picture taken?