The Long Gallery

The room runs on further than a lamp reaches, and its ceiling is high enough that the light gives out before it finds one. Bench-cut alcoves recur along both walls at an even spacing, as though whoever made this expected a great many people to need somewhere to sit at once. None of them have been sat in for a very long time.

Depth 4

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