Carach Angren Wall

This was the pass which separated the Vale of Udun from the Plateau of Gorgoroth, formed from spurs jutting out from the Ered Lithui and the Ephel Duath. This pass was like Cirith Gorgor also heavily fortified, and both rocky spurs that overlooked the pass had fortresses and watchtowers. Across the pass a wall of earth was built, with a great ditch spanned by a single bridge.