As their shallow valleys and fresh young streams ran west to meet the Great River Anduin, the low hills and ridges of the Emyn Arnen (S. ‘Hills Beside the Water’) defined the boundary dividing Harithilien from Forithilien. The Emyn Arnen were covered with grass and thorny bushes, where numerous goats and sheep grazed. They were also the home of several larger predatory birds, as well as a variety of the common hare. Additionally, packs of wild dogs roamed the hills in search of prey, threatening livestock and unwary travelers alike.