Taleth Runen.

This is the area Caranthir held in Beleriand in F.A. The borders was from Mount Rerir in North to River Ascar in South, River Gelion in West to Ered Luin in East. in the North by Mount Rerir; Lake Helevorn, deep and dark, Caranthir had his abode. Taleth Runen was the name of this land in the grey-elven language and that means East-valley. ( Sil )