The Orkneyinga Saga was written in Iceland in the 12th century and tells the story of the Viking occupation of Orkney. Tourists can now follow the Orkneyinga Saga Trail with interpretation boards at key locations of Viking events and places. The board in the photograph, on the Deerness peninsula, is at Dingieshowe overlooking Deer Sound. It marks the area between Tankerness and Deerness where the fleets of Earl Paul the Silent and an opponent from Sutherland fought with their longships lashed together. Earl Paul was victorious and sailed to Shetland where he captured the ships of a further opponent, Earl Rognwald. However, Rognwald would become Earl of Orkney the followig year and begin construction of the cathedral at Kirkwall in honour of his uncle, St Magnus.