Theory about Monster Hollow

[KorvinStarmast]

So, if you clear dungeon behind door A, the moment you leave it the rift is behind door A. Once you clear the dungeon behind door B, the rift is behind door B.

In that way you can ensure that someone who is just blasting through all the dungeons with his goblin army will never find the rift.

I don't have any proofs to help my hypothesis, I just thought it would be a neat trick :D

Yes it would be, and it has a certain Gygaxian sort of gotcha as well. (Why else use multidimensional stone?)

There is also an odd chance that it's in a Tesseract type of dungeon/room sequence, but we'd not discover that until one of the parties delves that deep and it is shown on screen.