We've always kinda figured, from the beginning, that it would be useful to have some kind of geographic representation of Harry's whereabouts over time. But it hasn't been a terribly high priority, and I, for one, have been dreading being asked to figure out the technology that would make this possible; I don't really know the first thing about mapping. Fortunately, no-one told any of Naomi's students about my dread, and one of them is curious about Harry's travels. So, away we go.