Marshall Pass, Colorado

Atop Mount Ouray in Colorado's Rocky Mountains, William Henry Jackson made this panoramic photograph of a train traversing Marshall Pass. The billowing steam engine is barely visible in the center foreground, about to pass a group of sheds that line the track. Jackson made this photograph in the 1880s, when settlers were moving farther and farther westward. At the time, he was working for the Denver and Rio Grande Railroad, which would have used the photograph to advertise the handsome scenery surrounding the route.