A Dwarven inventor (some say madman) known as Jalaan the Prophet had predicted the arrival of the Elder Entities centuries before their appearance and set to work creating Underhome, a safe haven deep underground. Most had scoffed at his warnings, shrugging them off as the ravings of an old loon. But some listened and, in those final hours when death and mayhem loomed on the horizon, Jalaan was able to spirit away thousands of individuals. Coming from various races, religions, and social standings, the Undermen spent the next two-and-a-half centuries scraping by a living beneath the surface of the world. With the guidance of Jalaan they developed all manner of technologies to assist in their survival, and were able to carve out quite a comfortable niche for themselves for centuries.