Yesterday, we did some scouting for our trip of 45 minutes this morning to watch the eclipse. Afterwards, we headed to McEwen to ride the Sumpter Valley Railway. Strangley interesting and easy to model. Our train was pulled by an original American Locomotive Works, Schenectady 2-8-0 and all the cars were original. Why it would be easy to model is that both sides of the track were surrounded by piles of heavy gravel tailings of the gold dredges.
If you Google Earth the area of Sumpter, Oregon, you can see the "Gold Field Tailings. Lots of river rock.
Off to get a sun burn, later.