Ûster Kryl (L."Hawk-Waters") was an oasis of trees and hills in the vast grass sea known as the East-plain of Middle-earth. It was occupied by sedentary, Linerin-speaking dairymen and farmers called the Ûsteri. Their famous 650 mile-long "Rope-wall" was a marvel of engineering. A 6-foot high fence made of laquered wood and well-oiled hemp, it resisted both fire and rot. It encircled the entire area. In the mid-Third Age, the Wizard Alatar founded a kingdom in the forest called Linimar ("The Place of the Blue One"), which included sovereignty over Daldunair as well. It was also known as the Round Western Forest.