A almost seemingly endless labyrinth that has no exit other than the entrance you came in and the exit that leads to the underground plaza. The walls are always moving making it so there is no repeated path or pattern to this world and there are creatures from other dimensions that have chosen to call this place home. Some of which may be friendly while the others may not.
This is a misnamed area that is equivalent to a typical sized city albeit underground. It has the same economics as it's sister city above ground but with an obvious difference.