#black gate
Upon the west of Mordor marched the gloomy range of Ephel Dúath, the Mountains of Shadow, and upon the north the broken peaks and barren ridges of Ered Lithui, grey as ash. But as these ranges approached one another, being indeed but parts of one great wall about the mournful plains of Lithlad and of Gorgoroth, and the bitter inland sea of Núrnen amidmost, they swung out long arms northward; and between these arms there was a deep defile. This was Cirith Gorgor, the Haunted Pass, the entrance to the land of the Enemy. High cliffs lowered upon either side, and thrust forward from its mouth were two sheer hills, black-boned and bare. Upon them stood the Teeth of Mordor, two towers strong and tall. In days long past they were built by the Men of Gondor in their pride and power, after the overthrow of Sauron and his flight, lest he should seek to return to his old realm. But the strength of Gondor failed, and men slept, and for long years the towers stood empty. Then Sauron returned. Now the watch-towers, which had fallen into decay, were repaired, and filled with arms, and garrisoned with ceaseless vigilance. Stony-faced they were, with dark window-holes staring north and east and west, and each window was full of sleepless eyes.
- The Black Gate, Two Towers, The Black Gate is Closed