Cumerians

The Cumerians were a civilization that endured in the Stigrix region of The Westmark from ~650 Pre-Ravaging to ~300 Pre-Ravaging. It isn't widely known what brought this people-group to its demise — though clever PC investigators might learn the cause(s). Some  theorize sages that a pact made with the Hell Kings went awry, leading to the Cumerians' undoing.