The plateau of Gorgoroth lies to the south-west of Barad-dûr, and so does Mount Doom to the east lies the plains of Lithlad. Sauron's Dark Tower, the fortress of Barad-dûr, was located at the foothill of the Ash Mountains. The only viable large entryway into Mordor lies in the north-west corner of Mordor: the deep valley of Udûn protected by the Black Gate of Mordor. The Ash Mountains lie in the north and the Mountains of Shadow in the west and south. Mordor is protected by three mountain ranges on all sides.
