|"Aros" by Matěj Čadil|
|Location||Flowing from Himlad around Doriath to the Sirion|
|Gallery||Images of Aros|
It arose in the northern lands west of the Pass of Aglon in the Shadowy Spring, and flowed south between Dor Dínen and Himlad; between these two lands the river could be crossed at Arossiach. The river's course then followed the eastern and, turning west, the southern boundaries of the Forest of Region; at that point it was joined by its main tributary, Celon. Aros then met the Sirion at Aelin-uial.