The Chalk Passage

Both walls are written on from the knee up — routes, times, initials, a shopping list, sums that do not resolve. The chalk is layered so deep in places that it has gone to a soft grey crust. Nobody has rubbed anything out; they have simply written over it, which tells you something about how they felt about each other.

Depth 3.

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