>>96485341
Sorry for looking a gift horse in the mouth, but I do find it humorous that you were able to come up with 98 good ideas but not 100.
So it's only fair that you make fun of me for my retarded idea. How much will players hate me? Notice that this is just a sub-level within a dungeon, and it's NOT an obligated passage between two levels, so frustrated players can just avoid it. I'll give maps to (part of) it as treasure.
This is a Minotaur lair, so it's meant for a mid-level party. Smart players actually have lots of means to navigate this, such as Detect Magic, Locate Object (2nd level MU / 3rd level Cleric) and Augury (2nd level Cleric), and Dwarf / Gnome / Stout abilities to detect sloping passages, depth underground, and direction underground.
Treasure should probably be generous here.