The Ruzun mountain range is in the southwestern reaches of the Northern Hordelands. In the First Epoch, gnoll tribe mined these peaks for silver and iron. The settlement of Flakk grew from these mining activities. When this city was wiped out, the mines were abandoned to the wild.
In the northern part of Ruzun is the volcano Traeulf. In 1642, it violently erupted, wiping out Hinnbjalf's population, and turning the northern half of Jadvild into a volcanic wasteland.