Setesdal (Urban East Norwegian: [ˈsêːtəsdɑːɫ];[1] older name: Sætersdal) is a valley and a traditional district in Agder County in southern Norway.
The historic Setesdal starts at Evje and extends as far as the farm Bjåen, at the edge of the traditional region of Telemark.
The Historia Norwegiæ, a short history of Norway written by a monk in the second half of the 12th century, reports that Setesdal was then part of the law district "Telemark with Råbyggelag".
A Raabygger or Råbygger is one who lives in a corner; this is an apt description for the valley of Setesdal, which runs like a wedge into the heights of the mountain called Haukelifjell.
Sigurd's slaying of Fafnir is described in the Prose Edda of Snorri Sturluson and the Völsungasaga as well as alluded to in Beowulf and Njáls saga.