Given the very high elevation (as timberline is around 11,000' in the central Rockies, well south of BC and Alberta), the narrow gauge railroad, and the regal peak (Presidential in appearance), I'm going to say Iron City, CO, along the narrow gauge railway between St Elmo and Pitkin, CO. The railway passes through the famous Alpine Tunnel beneath Altman Pass (renamed Alpine Pass after the tunnel was built). The elevation of the tunnel is around 11,000'.
Foy