Rhûn

Rhûn (S. "East") is a vast region of nearly 500,000 square miles. Most of it is open territory covered grasslands of varying quality. Western Rhûn is dominated by the mountains, rolling hills, and river vales near the Inland Sea of Rhûn (S. "Nen Rhúnen"). Numerous rivers-including (clockwise from the northwest) the Celduin, Kug, Sûrûbeki, and Warwater-feed this great mere, which is largest body of water in all of Middle-earth. The Taur Rómen (S. "Eastern Forest") covers the entire Kug Valley. Nearly two hundred miles across, it stretches over a hundred miles northeast of the Nen Rhúnen.

Rhûn is home to myriad peoples. Ulgathig-speaking tribes typically occupy over half the area, including the eastern and central reaches. Ioradja-speakers usually dominate the southern steppe-lands. A mix of groups, of which the Dorwinrim are predominate, live along the northern and western shores of the Inland Sea.