Thorn Sir ("Eagle-stream") was a river according to the early version of the legendarium in The Book of Lost Tales. It was located beneath Cristhorn, at the bottom of a gorge in the Encircling Mountains into which Glorfindel and the balrog fell. After this battle the river was stained black by the balrog's blood for many days.[1] Its Qenya cognate was Eäsindi.[2]
This river was later mentioned as Thornsir in an unfinished lay of Eärendel,[3] but was not used by J.R.R. Tolkien in any other text.
References
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The Book of Lost Tales Part Two, "III. The Fall of Gondolin", pp. 192-4
- ↑ J.R.R. Tolkien, "The Alphabet of Rúmil & Early Noldorin Fragments", in Parma Eldalamberon XIII (edited by Carl F. Hostetter, Christopher Gilson, Arden R. Smith, Patrick H. Wynne, and Bill Welden), p. 105
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The Lays of Beleriand, "II. Poems Early Abandoned: Fragment of an alliterative Lay of Eärendel", p. 142