Firienfeld was what the Rohirrim called the flat upland of Dunharrow; a large grassy area for the encampment of soldiers and refuge-seekers. Aragorn and the Grey Company passed through the Firienfeld on 8 March T.A. 3019; King Théoden and his riders arrived there the next day.
- J.R.R. Tolkien, The Lord of the Rings, The Return of the King, "The Muster of Rohan"
- J.R.R. Tolkien, The Lord of the Rings, Appendix B, "The Great Years"
- J.R.R. Tolkien, "Nomenclature of The Lord of the Rings" in Wayne G. Hammond and Christina Scull (eds), The Lord of the Rings: A Reader's Companion, p. 770