 The saga is a prose epic, relevant to the history not only of Scandinavia but the regions included in the wider medieval Scandinavian diaspora.The first part of the "Heimskringla" is rooted in Norse mythology; as the collection proceeds, fable and fact intermingle, but the accounts become increasingly historically reliable.The first section tells of the mythological prehistory of the Norwegian royal dynasty, tracing Odin, described here as a mortal man, and his followers from the East, from Asaland and Asgard, its chief city, to their settlement in Scandinavia (more precisely to east-central Sweden, according to Snorri).