Weyard said:im pretty sure it was one of the fake leaks that said that. also im pretty sure that in a thread elsewhere they figured out where in japan it was supposed to be. based on the one big harbor city and the bridges and such. don't recall where. but they had a picture of japan where they had circled it and everything and it looked pretty exact. to the west of johto and up a little i think, on the other side of the island.
There aren't any formations in Japan that have the "m" shape of Isshu and are still big enough to be recognized as an actual region, though. And there's far too much going on on the map we have now for it only to be a small portion of the map.
Edit: I say we form a team to search the entire map of the world for this shape. So far, the closest I have is the area around Sanghai, China (tilt your head to the left?). But that's not "very far away." Also, I think the fact that it start on route one confirms that it is at least not in Japan.
Edit2: I've looked around and realized I'm not the first to notice Songai. That's good. It has everything the region has, and once we can get a straight-down view of Isshu we should be able to confirm it's location (Songai or elsewhere)