Sewer Basin (Knight) (Patreon)

Deep below the bowels of the city, this basin collects refuse and runoff from every corner before flowing out. Derelict and disrepair, whatever old stonework led to the other side is crumbled and broken, as is a suspiciously sturdy stone door sealing the way beyond, but was it broken into or out of? If one wants to examine it more closely however, they must first cross the rancid waters to get to the other side, and there is no telling what foul life might be teeming beneath the opaque surface. There's really only one way to find out...