Amon Lhaw - the Hill of the Ear or the Hill of Hearing - was situated at the end of Nen Hithoel on the River Anduin.

With its twin, Amon Hen, Amon Lhaw watched over the surrounding marshlands with the Seat of Hearing at its summit. In common lore, it was thought that one could hear all the foes of Gondor from its peak.
Encyclopedia entry originally written by Rochvelleth