Náströnd

In Norse mythology, Nástrǫnd (Corpse Shore) is a place in Hel where Níðhöggr lives and chews on corpses. It is the afterlife for those guilty of murder, adultery, and oath-breaking (which the Norsemen considered the worst possible crimes).

In the standardized Old Norse orthography, the name is spelled Nástrǫnd, but the letter 'ǫ' is frequently replaced with the Modern Icelandic ö for reasons of familiarity or technical expediency.

The Völuspá says:

Snorri Sturluson quotes this part of Völuspá in the Gylfaginning section of his Prose Edda. He uses the plural of the word: Nástrandir (Corpse Shores).

...
Wikipedia