Bridge of Khazad-dûm, also known as Durin's Bridge, runs over Khazad-dûm in Moria. The Bridge was located at the foot of Dimrill Stairs over a deep abyss. The bridge was 50 feet long, narrow with no railing and curved upward over the abyss and back down again. It was an ancient defense against any enemy who might get past the Dimrill Gate (the east gate) and capture the First Hall and the outer passages; walkers on the bridge could only cross it single file, including any enemies.