User blog comment:Lordsunflash/Question of Redwall/@comment-26538658-20150710184701

I do believe that Brockhall is and always has been east of Redwall Abbey (also I would like to point out that Redwall Abbey was not built directly on top of the place Kotir was, in the Long Patrol a hole leading into a vast pool was in the southwest corner of the Abbey).

I do think Bella left Brockhall because no one would live there or need it anymore except her. And Redwall Abbey needed somebeast to watch the Dibbuns, and they made her Badger Mother.

And assuming you meant how did they get inside the mountain and get to inhabit it, I do believe that it took at least 25 seasons to drill in there and make rooms. However, from what the map tells us, they made many levels, not many rooms.

And the reason Brian Jacques stopped making sequels is first, the series is a SAGA, meaning everything corresponds to eachother. And the idea is that there is a gap between each installment, like between The Long Patrol and Marlfox.