Mountains of Shadow

A range of mountains that ran north to south between Ithilien and Mordor, forming the western border of Sauron's Dark Land. At the southern extent of Mordor's western border, the range turned eastward and ran for some four hundred miles to create a southern frontier for the Dark Land.

Also known by the Elvish name of Ephel Dúath, the main pass through the Mountains of Shadow was through the valley of Imlad Morgul, guarded (at the time of the War of the Ring) by the tower of Minas Morgul. In their northern parts, the mountains had a series of ridges and hills on their eastern side, known as the Morgai.