So, there's magic in Britain. And leylines. And covens of witches and possibly wizards. And Periodic Spontaneous Inter-dimensional Occurrence Nodes all around the place (that's what PSION stands for). And some leylines and/or covens are named after locations that are far away from them because they move around, albeit slowly. I don't really like how this turned out, so I may make a different version of the same map. Comments are appreciated, as usual.