Although it is composed in Old English, Beowulf is nevertheless about Danes and Geats, inhabitants of South Sweden as well as modern Denmark. There are eerie parallels between this poem and a late saga, that of Grettir the Strong, who operated in Iceland and Norway. Both authors dealt with the same cultural problem: ghosts and alien species hostile to humans. The two authors presented them essentially in the same way, and they bear little resemblance to ghosts as we understand them.