Friend was looking around for information on the Underground and that stirred up a couple vague memories of mine. Problem is that I can't find references to them in the books, so now I don't know if they're just really obscure or something I thought up.

One was a bit saying that the orks had run out a hidden tunnel into Salish-Shidhe territory for smuggling purposes. The other was that some organisation, a gang I think it was, was cooking up some sort of street drug from moss/fungus they were growing down in the dark. Either of these ring a bell with anyone?