Eaters of the Dead

Blurb

Eaters of the Dead: The Manuscript of Ibn Fadlan Relating His Experiences with the Northmen in A.D. 922 is a 1976 novel by Michael Crichton. The story is about a 10th-century Muslim who travels with a group of Vikings to their settlement.
Crichton explains in an appendix that the book was based on two sources. The first three chapters are a retelling of Ahmad ibn Fadlan's personal account of his actual journey north and his experiences with and observations of Vikings. The remainder is based upon the story of Beowulf.