Tunnel magic is tied to the old Mithras cult. It would be interesting to find out what happened in the tunnels under Epstein's island.

I doubt they are just meant for trafficking. Several older cities have under grounds. These were previously locations for brothels and less desirable businesses. I wouldn't doubt the tunnels still exist and could be used for anything. But why for that? Seems easier to just operate above ground.

Fake and gay.