evidence: My journey ended at Lough Foyle, a large estuary at the border’s north-western end, on a fine summer’s day, and the water was as flat as glass when I canoed out towards the open sea. For the whole journey it had been my principle to stick as close to the borderline as possible, but here I was free to drift. If you look at a map of the lough you’ll notice it has no borderline. The exact coordinates of the frontier are not set, nor are there plans to set them. Most nations claim ownership of a certain amount of territory beyond their shores and so Lough Foyle, where Ireland north and south face each other closely, could easily be a subject of dispute. Instead a cross-border office has been created to manage the lough, one of six north-south bodies initiated by the Good Friday agreement. So the border is in the water somewhere – but, for the moment at least, everyone has better things to talk about.