Teeth of Mordor

Two tall strong towers built by Gondor, now repaired and garrisoned by Sauron, standing on black-boned bare hills at pass mouth, stony-faced with dark windows.

The Teeth of Mordor, a pair of imposing towers erected by Gondor to guard the strategic pass into the dark land, fall into Sauron's grasp by the time of The Two Towers, where they are repaired and garrisoned as stony sentinels with dark windows piercing their black-boned hills. Standing as unyielding barriers at the pass mouth, they symbolize the inexorable advance of Mordor's shadow over once-noble Gondorian fortifications. Though their role remains static across the series, they underscore the defensive perils faced by the Free Peoples in their desperate push toward the heart of evil.