In Norse mythology, Dökkálfar (Old Norse “Dark Elves”) and Ljósálfar (Old Norse “Light Elves”) are two contrasting types of elves; the prior dwell within the earth and are most swarthy, while the latter live in Álfheimr, located in heaven, and are “fairer than the sun to look at”
(via a-soul-playing-in-dreams)