The Grafenmyr; which means 'Grey Sea’ in elvish, is a large inland body of water, located in the East.

Along its western shores are the fertile valleys that feed the realm of Morgoth. The sea is cold and overcast much of the year, hence its elvish name. The sea also serves as a border between the realms of Morgoth and Üthrar. This is the largest source of fresh water in eastern Corwyn, and its shores are covered with small villages and settlements, as it serves all of the eastern realms. Along the eastern shores of this sea are the haunted ruins of Ashkavan.