The main material for the Sewer is stone bricks, sometimes outlined in moss. There are plant growths scattered across the ground, and torches intervaled along the side wall. A water channel runs down the middle of the hallways.
The Sewer generally consists of one main room and several branches. The main room is very large and has a pit of water in the center. The offshoots have water streams in the middle and can contain small siderooms. The siderooms are slightly elevated with an item and waterfalls.