Grettir the Strong is one of the last great Icelandic sagas.
It relates the tale of Grettir, an eleventh-century warrior struggling to hold on to the values of a heroic age becoming eclipsed by Christianity and a more pastoral lifestyle. Unable to settle into a community of farmers, Grettir becomes the aggressive scourge of both honest men and evil monsters - until, following a battle with the sinister ghost Glam, he is cursed to endure a life of tortured loneliness away from civilisation, fighting giants, trolls and berserks.