A large tiled pool sits in the center of this chamber, surrounded by sloping tiled floors. A few steps descend into the basin, which has accumulated a deep layer of sand on its bottom. Faded murals on the walls depict scenes of life along a river, with recurring themes of running water and aquatic life running through the artwork. In the northeast corner, a tarnished bronze spigot juts from the wall just above head level. Archways lead north and west, and a stone door stands in the eastern wall.