This hill may have had special acoustical properties that enabled a person on its summit to hear for miles around (analogous to the Seeing Seat on Amon Hen).
Formerly, Amon Lhaw, was part of the northern borderlands of Gondor, to the extent that a high seat (possibly named the Seat of Hearing) was built there. It was one of the two watchtowers of the marchlands of Gondor. However, centuries before the War of the Ring; by then, it had fallen under the influence of Mordor.
Portrayal in adaptationsEdit
Amon Lhaw is shown in The Lord of the Rings Online.