Here is the other part of the map that I just showed, this would be inside the sewer, as I said before, the blue is the water, the red lines are where zombies come out and the purple lines are doors that open with dots. the circle that is shown at the end of the place, is a staircase that leads to the lower part of the sewer, soon I show that part. by the way, the brown part is a kind of little wooden bridge. another thing, could you add 2 corpses inside the sewer? but they are in different places.

