Wow nice find anon!
I like it. I had some images tying that in but the larger the image got the more I thought K.I.S.S. The interesting thing is I also have this image though I haven't conf it was from NHTRC as some suggested, yet. I plan on making more to show all the data out there.
Underground sex houses…which really makes me wonder about Seattle and Portland since they both have literal "underground" sections, old city…creepy AF. Think shanghaiing.
<pic related
Oh shit key…didn't click at first.
Though not entirely related to what you are pointing out, I found a map showing that human trafficking from Asia went into Seattle. China <>NK<>Seattle? Is that possibly part of it…that makes Seattle a MAJOR hub.