Before I could add the AK Asphalt texture paste to the raised road section the piece required framing. I had purchased some Oak veneer but test fitting it exposed an issue with the cut of the Styrofoam on one of the sides. I had used a foam cutter, and I had started from what I figured was a nice straight edge. Unfortunately, I didn't spot a couple of wavy undulations in it and adding the veneer would only expose the flaw. So, to plan B and I had just enough Basswood left from a previous project. These are 1.6mm thick. I marked, cut and added four nice straight side pieces instead. I cut them a tad long so I could sand them square...or as sqaure as I managed to cut the Styrofoam!
Once they had cured to the styrofoam with the aid of UHU Por glue, and each other, with wood glue, AK dark mud mixed with tea leaves and scatter was added into any small gaps that were left and blended into the existing terrain.