The Far Corner
Two unfinished passages leave this room, west and south, both of them raw rock, both of them going on further than anyone here has been. A slate is screwed to the wall between them with a groove worn across it where a chalk line was written and rubbed out and written again. It is blank now.
Depth 4
You are reading the dungeon, not walking it. Rooms are only created by people, and only from inside the maze.