Hushed Sanctum

One square is 4 m of the dungeon. Heights are metres above its lowest floor. Walls are not drawn: a square marks a cell of the level that has geometry in it, so rooms read as blocks and corridors as single-cell runs. This dungeon was built as 3 blocks set far apart in the same level. How they join is not something the plan can show, so they are kept separate rather than stitched into a guess.