I'm sure I'm just missing it in the description, but where does the trapdoor in the ceiling of D9 lead? I know that the trapdoors in the ceiling of D10 both lead to Dead Dog Alley, but I can't find where the one in D9 leads.
when i ran it, i put it in the bottom of an empty well in the plaza of dead dog alley. the 4 in the round rooms (area d10) are in abandoned buildings around the plaza market square area. hope this helps