A lot more work on this in the last few days. The roadbed is Midwest cork roadbed. I'm using chicken wire and plaster for the scenery and working pretty hard to get the basic benchwork and terrain done as quickly as possible. I'm also spending a bit of time researching scenery for these. It will be split into two zones, one a sort of Williams AZ style, the other more along the lines of Needles CA. Next up, plaster cloth and maybe some rock carving.
Edit. The pictures seem to be reversed.