Sirnúmen

A small stream in the hills at the Western side of the  Pelóri northwards of  Tirion and  Calacirya. Sirnúmen ran from the hills into the little dale where  Fëanor built  Formenos and then across the plains of  Valinor until it came North of the roots of  Telperion, then it dived into the earth. The source of Sirnùmen was Kapalinda.