Sirion was the great river flowing from north to south and dividing West Beleriand from East Beleriand. References Read Sil Passim; read esp. 51.120,122; UT 34-5.38,40-2,54,56. 78.109, U4, ¡16,120, ¡47. Retrieved from "https://notionclubarchives.fandom.com/wiki/Sirion?oldid=78236" Categories: River Beleriand First Age Elder days Community content is available under CC-BY-SA unless otherwise noted.