User blog comment:Lordsunflash/Question of Redwall/@comment-1145722-20100908021642

Question 1: I think it's just that the maps have different angles. If you align and tilt all three maps together so that Salamandastron and Redwall face in the same direction, Brockhall is in the same place. As to why Bella left it.... IDK.

Question 2: Salamandastron wasn't built by creatures. It's a volcanic mountain, and was there naturally. The tunnels, however, were most likely constructed by the early badger lords and such.