On the Return from Silverton, Colorado.
A version of this image appeared as the cover image from my 1999 book Narrow Gauge Steam Locomotives, published by MBI.
The book was a square format and so the sky was partially cropped. That’s a pity since the sky was especially textured that afternoon.
I exposed it as part of a motor-drive sequence using my Nikon N90S with 28mm lens and Fujichrome Provia 100F. The photo on the book was one or two frames earlier in the sequence.