Get to the old quarry and "ghost town" of Marble, Colorado, south of Glenwood Springs. The road is good to there. Put your vehicle in 4WD and head to the ghost town of Marble toward the east. The millsite is across the canyon just below town.
The road to the old mill is rugged and requires 4WD. As summer heads toward August, the road gets chewed up. Don't try this in a low-clearance, 2wd vehicle!
How do you photograph an icon of Colorado done so many times? Take it apart and re-assemble it back in the comfort of the studio.