Ossium is the north-western territory of the Mallum, which borders Karsk, Holberg, and the Forest of Ulnak, and lies across the Semmerlak from Weirwater and Semmerholm. It is a land of dense, twisted forests and dripping marsh, rich in both natural resources and threats. Only a small portion of the territory is open - the majority of Ossium is shrouded in old, moss-bearded trees, pools of stagnant water, and narrow, fast-flowing streams. The majority of the population are orcs - primarily subjects dominated by the Druj, the former masters of the territory. There are also scattered small groups of humans, primarily former slaves of the Druj or privileged enclaves such as the Ketsov.