Two shaders in use here, a Gravel Road Compressed, and Gravel Road Loose, as well as a "natural" (to the environment) rock surface that isn't part of the road shaders. Dune grass 2 and 9 for ambience. The basic dirt around the road was bugging me. I forgot to add base displacement to the road leveling so the tread paths look too flat imo. Doing another render with higher GI settings and a base displacement over night.
My usual "high contrast" type camera post processing, though I forgot to mask out some of my fake AO which made the grass to dark trying to add a bunch of shading.