You come away from Karak Vlag thoughtful. It's changed quite a bit, as you suppose would be inevitable after almost two centuries of complete isolation in such trying circumstances. They're something of a makeshift republic, they've splintered from the Runesmithing traditions of the Cult of Thungni, their culture seems, erm, markedly different from the Dwarves you're familiar with. They've had to rebuild their entire society around necessity. No brewers if there's barely enough grain to feed everyone. No smelters and very few miners if you can only mine in a single direction, and that upriver. No traders, no hunters, no rangers. Just farmers, and fighters, and those reworking and maintaining their dwindling and irreplaceable metals as best they can over several generations.
And yet they survived. No, more than that, they thrived. Their nadir was over a century ago, Brokkr said, and their population has been climbing since.