The Flooded Channel
Words are scratched deep into the brick above the waterline: IT RISES AT NIGHT. The room was built to be full. It is not full now, but it does not seem to have forgotten. You are in a chamber of some size: 4 paces one way and 5 paces the other. One corner of it is missing, as if the builders met solid rock and went round. Someone carved a prayer into the lintel of a niche, and the water has smoothed away every other word.
Depth 52.
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.