Places in Middle-earth
Gates of Sirion
Type: Other Natural Formations
Region: Beleriand & North
1 east of the gorge of Nargothrond Sirion fell from the north in a mighty fall below the Meres, and then he plunged suddenly underground into great tunnels...; and he issued again three leagues southward with great noise and smoke through rocky arches at the foot of the hills which were called the Gates of Sirion.
The Silmarillion, Quenta Silmarillion, Ch 14, Of Beleriand and its Realms
1 A league is approximately three of our miles.
Unfinished Tales, Part 3, Ch 1, The Disaster of the Gladden Fields: Appendix, Númenórean Linear Measures
Elena Tiriel 5Dec04, 30Jul10