The Grey King's Hall is the site on Nagga's Hill where the Grey King raised his hall out of the bones of Nagga. It is the site of kingsmoots in the Iron Islands.
Nagga's ribs became the beams and pillars and her jaws the throne. According to legend, the Hall had been warmed by Nagga's living fire and on the walls hung tapestries made of silver seaweed. The men sworn to the Grey King ate at a table shaped like a large starfish while seated on thrones made from mother-of-pearl. Upon the Grey King's death, the Storm God snuffed out Nagga's fire and the sea stole the throne.