Headed back to the mines, a load of empty ore cars passes below McKennon Arch as twilight comes to the desert. A raven croaks atop his favorite saguaro while a sleepy diamondback rattlesnake soaks up the last of the day's warmth held in the rocks. Though intent on his business, the gruff old engineer steals a moment to take in the view from the open cab of engine #6. With a contented sigh, he understands why some folks call this piece of country the Rainbow Desert.
Backdrop and atmospheric effects added in Adobe Photoshop. All else as modeled.