Ive finally combined our concept ideas together to produced a fairly good looking map.
-An energy generator
-Water supply, drips of water from the surface gets collected in one area, then supplied to the survivors.
-A green area (The underground city has ONE source of light from the outside world,however, its too dangerous to attempt to crack open and escape, therefore, it is left alone. )
-Lights spreaded around the city from the power generator.
-The main Police Station
-New houses the survivors build/ re-use out of the ruins.
[Map to be scanned in]