On my last trip to the Alpine Tunnel our family rented two ATVs to ride up to the west portal. I've found lots of videos of the route from Woodstock to facilities ahead of the tunnel, but not as many of the earlier stretches of right-of-way. With a GoPro mounted on the roof of our ATV I was able to capture the ride on the old DSP&P/C&S right-of-way starting in Pitkin.
This video covers the stretch from Pitkin to the townsite of Quartz, following in the "footsteps" of eastbound C&S mixed train 93. Some historical photos and sites are highlighted along the way, as is the terrain traversed by the railroad.
Enjoy,
Kurt