Soon he came out alone on the summit of Amon Hen, and halted, gasping for breath. He saw as through a mist a wide flat circle, paved with mighty flags, and surrounded with a crumbling battlement; and in the middle, set upon four carven pillars, was a high seat, reached by a stair of many steps.
- The Fellowship of the Ring (Book 2), Chapter 10
The ruin of Amon Hen sits on top of the westernmost peak at the southern end of Nen Hithoel. Erected in the days of the great kings of Gondor, it consists of a wide flat circle paved with large stones and encircled with a ruined battlement surrounding a great ancient chair called the Seat of Seeing. Its original purpose is unknown.