In Norse mythology, Éljúðnir (sometimes Anglicized to Eljudnir) is Hel's hall located in Niflheim as described in chapter 34 of Snorri Sturluson's Prose...

owned by Hel with huge walls and gates. The within of this place is called Éljúðnir, where Hel is described as having a servant, a slave and various possessions...

"great Mansions" with extremely high walls and immense gates, a hall called Éljúðnir, a dish called "Hunger," a knife called "Famine," the servant Ganglati...

Disease, her bed; Gleaming Bale, her bed-hangings.(original Norse idiom: Éljúðnir heitir salr hennar, Hungr diskr, Sultr knífr, Ganglati þræll, Ganglöð ambátt...