Hidden Rooms or Map Scrolling? I find, as a result of the maps circling back around, that areas I think might be "secret" are merely areas I've already visited, scrolling back around on me. For example, I can see on the prison mission (2nd?), "in the fog of war", I can see what LOOK like hidden rooms, but I think they may just be areas that I've visited on the other side of the map. how do I know? there seems to be no way to penetrate the wall and explore. Tips?