On the other hand, 'Nagga's Bones', the ruins of the Grey King's old hall, still exist and were used as the site where kingsmoots were held to elect the new King of the Iron Islands (before the kingship became hereditary). In a world where dragons once stalked the skies, there may be some kernel of truth behind the legends, which were later exaggerated to make Nagga big enough to drown entire islands. It has never been established that 'sea dragons' were ever real creatures. In the A Song of Ice and Fire novels, the legendary Nagga was said to be so immense that it fed on massive krakens and drowned islands when it was angered.
