Finally Kalath reaches the southern end of the tunnel. The air is oppressive here and as he looks northward he sees that he has not really come as far as he thought for he can still make out the westward tunnel entrance.
At the southern end of the sewer tunnel is a small set of steps leading up to an iron door. The door has no handle or latches or visible hinges. Painted on the door is what appears to be a black octopus with bat wings.