Carved deep into the side of a mountain is a gaping maw beneath a carved, monstrous face of stone. Some say that it was carved by humans, others by orcish hands. The remaining residents of the Dungeon are very close-lipped as to what they know. There are a few things known. The mouth of the carved face serves as the entrance into a maze of twisting passages, all leading down into the mountain. Orcish spellcasters took over the area in centuries past, claiming they had found the ruined keep deep within the mountain. The twisting halls were once used as a prison, as the many cells scattered throughout the deeper parts of the halls demonstrate. Runes line the cells, though their magic is long-spent. The language is unknown, though the few scholars that have ventured into the depths have suggested it is an offshoot of the trade language of Adeluna.

The passages from the mouth of the Dungeon pass through the mountain, continually descending. Orcs patrol the halls, but there are many passages into the deeper parts of the dungeon. But they all eventually come together again in the deepest part of the mountain. In millennia past, it was a volcano, but the only sign now is the lava which surrounds the keep like a moat. The keep itself is mostly a ruin, but there is an eerie glow coming from the shadowy areas. The same runes from the cells above line the walls of the keep as well, though these have kept their magic. Orcish necromancers work towards two goals: uncovering the secrets of the ruined keep, and keeping their brethren alive. Some of the most powerful casters are resurrected as liches, and they are the most dangerous inhabitants of Tenebrim.

There are still many secrets within the deeps of the Dungeon, and rumors of treasure persist, especially with the presence of the orcish liches. Books of powerful spells, as well as the armor and weapons of the adventurers who seek them, provide a powerful incentive for those brave enough to explore the depths. Rumors of hoarded artifacts persist, though the questions arises as to why the orcs have not used them to try and claim more territory.