Map 319 is the contours of the heights and very basic terrain. I had planned to do more but got sidetracked.
......and yes building the terrain with just the right amount of "stick" will be tricky. It really needs to be partway between bare earth and mud......A lot of shell holes and a combination of the various brown terrains including volcanic black sand might be worth experimenting with
....similar in a lot of ways to that WW1 map above