This region was characterized by the hills of Tyrn Gorthad and Tyrn Hyarmen to the west, the Old Forest forming the far western boundary. The uplands turned to plains country south and west of the hills up to the Great South Road, the Girithlin Highlands, and the Gwathlo watershed to the south. This included the plain of Dyr Erib up to the bank of the Mitheithel in the east. The light woods of the hill country consisted largely of broadleafs, with considerable ground cover. Precipitation was moderate, the heaviest rainfall coming in autumn.