Not sure if this is of assistance or not but Scalescences have downloadable products that you can print out even in N-gauge.
Could be worth playing with these first regardless of what you decide to do as they are cheap and give you a good visual of what you may build later if you want more 3D texture.
Scalescenes Arches
Could be worth playing with these first regardless of what you decide to do as they are cheap and give you a good visual of what you may build later if you want more 3D texture.
Scalescenes Arches