The Silted Culvert
A pipe runs the length of it at knee height, and you step over its brackets every few paces. End to end it is 6 paces, and the walls are never more than an arm's width apart. The water carries a faint scent of beeswax.
Depth 57.
First charted by Wanderer #1.
You are reading the dungeon, not walking it. Rooms are only created by people, and only from inside the maze.