Are you sure they're aggressive?
http://images3.wikia.nocookie.net/__...totoRuins2.png
I haven't looked at the entire path to the Mahogany door lately, but I do know that, while entering this map from A takes you into ZOMG goblins and skeletons, entering from B takes you past non-aggressive beetles and giant bats. I assume that the next fork also has a "right way" and a "wrong way."
