New design for sewer.
Portal drop with cut opening in center.
Further upstage, a backdrop which contains a sewer cover (lid) center stage
please note, we would like the sewer cover to be cut open creating a hinge flap on top of the circle.

We plan to have a ladder come on stage so the actors will be seen climbing down through the man hole cover. A platform will be placed upstage of the (manhole cover) backdrop.