The Sands of Delmaria
Last of the great Dwarven holds, Kalach Mor as a vast underground city from a previous age. Kalach Mor is generally regarded as the most powerful of the city states due to its defensive position and technological marvels. However it is a closely guarded secret that the city is in decline, with several districts having already been abandoned. They say that the city is reliant on the machines that run the city but no one alive understands how to repair them should they break.