Does anyone know anything about this locale? I'm going to be playing a dragon-hating dwarven barbarian 1/magus 3 in Kingmaker chapter 2, and I was thinking of having him come from there. Or maybe the Golushkin Mountains of Brevoy, like Grayhaven or Highdelve. Or maybe even both. I imagine his barbarian tribe got killed by some dragons, and he took on the path of the magus so he could use magic to fight dragons. I plan on taking the Wyrmscourged and Lore Keeper alternate race features. I figure he could be starting small and try to rid the Stolen Lands of tatzlwyrms.
But what's the deal with Sunder Horn? I couldn't find anything about it in the Inner Sea Guide or the Pathfinder Wiki.