GURPS: The Known World
The Pillars of Night was the seat of the lost civilization of the Draleth. The Demon that brought them down, Naarash, had its seat here. From this place of power, the evil cult worshipping this Demon struck out against the champions of Light.
When Sir Drac Evonford, a Holy Warrior of Thenos as well as the Order, approached the foul Demon, he succumbed to its temptations. Thus, he became its new Champion.
Both Naarash and Sir Drac were slain by a brave adventuring group.
In the aftermath, the cult of Naarash was destroyed by infighting as ambitious Ork and human warlords fought for supremacy.