"place them where you want", they said. But if you want a consistent world, not every placement will make equal sense. Find thoughts and inspiration on where (and why) to put the Raven's purge sites.
Beware:
Spoilers ahead
Although your GM might have an entirely different view on the world. You have been warned, though.
Amber's Peak
Amber's Peak is Zertormes Castle, who in turn is leader of a collection of Aslene tribes. as he liberated the plains of Margelda, it makes sense to place Amber's peak there:Ah21 would be a niche place.