As you go down the water,' he said, 'you will find that the trees will fail, and you will come to a barren country. There the River flows in stony vales amid high moors, until at last after many leagues it comes to the tall island of the Tindrock, that we call Tol Brandir. There it casts its arms about the steep shores of the isle, and falls then with a great noise and smoke over the cataracts of Rauros down into the Nindalf, the Wetwang as it is called in your tongue. That is a wide region of sluggish fen where the stream becomes tortuous and much divided. There the Entwash flows in by many mouths from the Forest of Fangorn in the west. About that stream, on this side of the Great River, lies Rohan. On the further side are the bleak hills of the Emyn Muil. The wind blows from the East there, for they look out over the Dead Marshes and the Noman-lands to Cirith Gorgor and the black gates of Mordor.