2022年12月8日 · Nidavellir was also known as Svartalheim, a name derived from the Old Norse svart, meaning “black;” alf, meaning “elf”; and heimr, meaning “home.” Translated literally, Svartalfheim was the “home of the black elves.” Mythology. Rarely mentioned in Norse sources, Nidavellir is a realm that remains shrouded in mystery.