- "To North there lay the Land of Dread/whence only evil pathways led/o’er hills of shadow bleak and cold/or Taur-na-Fuin’s haunted hold/where Deadly Nightshade lurked and lay/and never came or moon or day."
- ― Canto I, Lay of Leithian
After the Dagor Bragollach, the darkness of Morgoth began to corrupt the northern forests of Dorthonion, and they came to be called Taur-nu-Fuin, the Forest under Nightshade. This name is sometimes also used for the land of Dorthonion itself, after its capture by Morgoth.
In early texts it was spelled Taur-na-Fuin, as seen in the excerpt from the Lay above.