Rivers are one of those tricky terrain features to get looking really good. The best method is, without doubt, to build terrain modules that allow the river to be carved in to the module, then use water effect solutions, potentially giving a very realistic result. However, terrain modules are expensive and take lots of room to store, etc, etc. So the only other option is 'place on the table' terrain. I made a river years ago using thin MDF, with polystyrene for the banks, but it was quite a bit of effort and it had occasional problems with the MDF curling, so I sold it. But now here's a marvellous, cost effective solution that didn't take much effort to complete. Vikings defend a bridge. River with small island. They're made of brown rubber so are very durable and flexible. They take paint and flock easily and come in sections either 10"-12" (25-30cm) long, or about 6" (15cm) for the bridge section. There is also a ford availab...