In Norse mythology, Dökkálfar ("Dark Elves") and Ljósálfar ("Light Elves") are two contrasting types of elves; the dark elves dwell within the earth and have a dark complexion, while the light elves live in Álfheimr, and are "fairer than the sun to look at". The Dökkálfar and the Ljósálfar are attested in the Prose Edda, written in the 13th century by Snorri Sturluson, and in the late Old Norse poem Hrafnagaldr Óðins.