Horker Island is a small island just off the east coast of Solstheim. On the southern coast of the island is an overturned longboat where Saden's Journal can be found. The journal explains a little about how the Horksbane's previous owner died. Head north along the coast to find several dead Reavers, evidently slain by the horkers lumbering around. Saden's corpse can be found on a hill. Follow the blood trail up the hill to find a large unique horker named Lord Tusk. Also on the island is Gyldenhul Barrow, the resting place of the legendary pirate, Haknir Death-Brand.