The Other Wind (The Earthsea Cycle, Book 6)

Haunted by terrifying dreams of the land of death and of the dead who seek to invade Earthsea through him, the sorcerer Alder enlists the aid of Ged, a former Archmage, who advises him and his companions to find the holiest place in the world, the Immanent Grove on Roke, which holds the key to preserving Earthsea. 100,000 first printing.