The Unfinished Cut
The passage simply stops. The rock face at the end is raw and bears a half-struck mark where the last blow landed, and the tools are not here, and neither is anyone. The dust on the floor is undisturbed except for one set of prints that walks to the face, stands a while, and walks back. There is a hollow sound behind the southern wall, as though the stone were not solid.
Depth 3
You are reading the dungeon, not walking it. Rooms are only created by people, and only from inside the maze.