Video or some file idk
The term "Dark Elf" in Tolkien's writing seems to hold an unexplained meaning, as it is given as a special title of Eöl, an Elf of Nan Elmoth. It is also used as an insult by the Sons of Fëanor to Thingol (which is incorrect, since Thingol alone of the Sindar was reckoned under the Calaquendi).[3]