.......and Mark, he must be doing the same to you. Rather than pick the entire Denver & Rio Grande, I'm saying Elk Park Station, CO, near the Silverton end of the Durango to Silverton railroad, at an elevation of 8,300', and being a regular stop on the narrow gauge line. My logic is the tracks are clearly in regular use, nearby peaks are well above timberline, and the station area itself appears to be fairly close to timberline.
And, I thought of that rail line before seeing Mark's post within which he boldly pondered the entire line.......Honest.
Nice stuff, Kestrel. Now I've GOT to get back to work.
Foy