East of Wild Temple, South of Duck Point, square on the old trade road to Esrolia, lies Man Vill. It's not in the Guide, it's not on the Argan Argar Atlas, it's not in the Glorantha Sourcebook. I haven't read Smoking Ruin myself since I'm in an active campaign but my GM says they couldn't find a reference to it in there either.
So what's up with Man Vill? What's going on there? There's probably something interesting to be said about the only human settlement of any significance on a direct line between Duck Point and the Shadow Plateau.