Nan Dungortheb

Nan Dungortheb (Valley of Dreadful Death) is the name of the wilderness south of Ered Gorgoroth and Dorthonion, east of Dimbar and the river Mindeb, west of Dor Dínen and the Esgalduin, and north of Neldoreth and Doriath. It is named after Ungoliant, who resided there after escaping the Balrogs of Morgoth and Lammoth. It is also named for its proximity to the Ered Gorgoroth, where Ungoliant's ancestors haunted the deep vales of the mountains and its closeness to the shadowy webs of the Girdle of Melian.