I'm level 45 near the general endgame of the, uh, game. I completed pretty much the entire left side of Coldharbor's map and I understand that several quests contribute to the general "restoration" of the main town. However I'm basically stuck there, as any other points of access are blocked. The northern most door won't open and I can't figure out how to access the north/northeast side of the map to continue my questing. The two or so quests I do have are orange, marked at level 48. One of which is mostly the "Take care of everything else".
I'm not really sure what to do next.