The area was largely uninhabited, 'hostile' tribes living in the northern area, 'domesticated (by the Romans) tribes and Romans in the south, the Romans principally in castella and larger 'towns'. The rivers found their way through marshy, boggy low land, and deposited sandy banks. Off those banks it was very wet and boggy. Later these extensive bogs were cultivated, excavated for peat and dried down, so nowadays the rivers mostly lie higher than surrounding countryside, hence the need for Dutch dikes. The Roman border road and castella were built on the river dunes area.
So this morning I had this better idea to first raise an area of wide sandy deposits, use the inversed mask for the bogs, then make a shallower line for the river and smooth that down again (partly). I also want to make more dunelike areas.
Still no need for a compute terrain
The areas between the towers would have been cut low, but for the rest there may have been large extents of 'wet trees' and shrub.
Some next WIP's, still no good at all.
