Sub Decks

 So let's also explore what happens when people start going in the other direction. Digging deep. Let's examine how this all sounds:

1) This where the rails connecting the arcologies are found

2) Waste, some industry, maybe the reactor core?

3) Also, the major detention center. This is where criminals are held, usually for a week  if it's bad, but not psychopathic bad. 

4) This is also where some secret experiments are held. Maybe dangerous, maybe unethical.

5) Likewise Black Ops type meetings. Need to know basis even, maybe especially on the people in power

6) A lot of it is intentionally unifinished. Floors that they don't even know they're for yet, and at that's the point

7) There's usually more than normies know and less than conspiracy theorists think. There's not an entire underground city.

8) Because nobody is out to set out and create a society of morlocks.

9) But in some more oppressive arcologies, that is starting to happen. The slum cities. The literal underworlds. Usually in the more hostile landscapes, maybe those built into mountains.