The Whitened Vault
Someone spent a great deal of care arranging what is stacked against the far wall. A lantern bracket juts from the wall, empty and rusted through. Someone has scratched a tally into the wall — 23 marks, the last one shallow, unfinished. There is a hollow sound behind the north wall, as though the stone were not solid.
Depth 23.
You are reading the dungeon, not walking it. Rooms are only created by people, and only from inside the maze.