Niðavellir


In Norse cosmology, Niðavellir + Vellir, also called Myrkheim, is the home of the Dwarves.

''Völuspá''

It is mentioned in the Völuspá:
Stóð fyr norðan, / á Niðavöllom / salr úr gulli / Sindra ættar
.
One interpretation of the above verse would read like this:
Before you reach the north, A dark dwelling stands, In halls of gold, Sindri's bloodline lives.
Sindri was a famous dwarf. And ættar means bloodline, or in this case most likely kin or tribe.
Niðavellir has often been interpreted as one of the Nine Worlds of Norse legend. The problem is that both Nidavellir and Svartalfheim are mentioned, and it is unclear if the sixth world is a world of dwarfs or one of black elves.
The dwarfs' world is mentioned in the Prose Edda by Snorri Sturluson as Svartálfaheimr.