Early on, we experimented with diaramas in order to learn how to model scenery. Here, a base coat of thick latex paint goes on the foam.
And later it turns into ballasted track, rudimentary greenery, and a dirt road made of real (but very fine) dirt.
A significantly more advanced version followed some months later.
The real scenery work on the layout is yet to be done, pending the completion of the track. Stay tuned!