Sea of Rhûn.
Eastern Sea.
The Sea of Rhûn lying in the Near East of Middle-Earth ( See Endor / Arda.) in the Second and Third age was a remnecent of the great Inland Sea of Helcar in the First Age lying in the area of Midlle-Earth which was called Palisor between the Orocarni and Hithaeglir. The Sea of Rhûn covering 400 square miles but only 4-5 % of the Sea of Helcar is in the North-West corner of this once great sea. In the North-West of the Sea of Rhûn has river Carnen its outflow. In the North-East is the outflow of several unamed rivers from the Orocarni between an unnamed forest lying at the shores of the sea ( Perhaps remnecents of the Wild Woods.). West of the Sea of Rhûn is the land of Dorwinion and 200 Miles South is the East end of Ered Lithui.