What's going on with Scara Brae is up to you. I'd suspect it'd be okay structurally because it was pretty far from the epicenter of the earthquake, but it would certainly be affected by the ash cloud. Perhaps Scara Brae is a stepping stone of those assassin's invasion of Corone? Perhaps some ancient goddess in Stonevale protects the wildlife there, making it a sanctuary for all living creatures and some poachers try to capitalize. Perhaps the cloud is thin there and nothing changes. Maybe Sir Narripleon chooses a successor, who then overthrows the queen to make Scara Brae a dictatorship. You could do so much!