This should make you ask,,,"WTF"

[guohua]

@"Ninurta" 
How populated is the area of Your Tunnels?
It sounded like they wanted a Human Population close by our above their heads,,,,,, Now the question is WHAT is the REAL Reason Men, Women and Children need to be readily accessible?

Not very populated at all. Most counties around here have a population equivalent to a small town, and any 8 of them together would not have enough population for fill a small city - and that population is spread out over considerably more area.

However, most of the area is "karst", which produces pretty spectacular caves, and what isn't karst is honeycombed with abandoned coal mines, so we have no lack of tunnels, both natural and man-made.

As to your other question, not just accessible people, but concentrated populations. Concentrated populations are easier to control. They are less self-reliant, and more docile, all at the same time. When you need a quick source of slaves... I mean "manpower", you go where there are lots of people, and it's even better if there are lots of CONTROLLABLE people.

Also, Soylent Green is... PEOPLE!

.

Yes, Controllable People, The Sheeples, in any Blue State and Blue Sanctuary City.
The more people, the less of a chance a few will be noticed when they go missing.