The Western Threshold

The cut stone gives out entirely here. West of this room the passage is a natural fissure that nobody widened, going on into rock that has never been surveyed, and the draught comes out of it steadily and cold. A wooden stake has been driven into a crack at the mouth. Nothing is tied to it now.

Depth 4

You are reading the dungeon, not walking it. Rooms are only created by people, and only from inside the maze.