| Stronghold of Sauron in Mordor. The Dark Tower is at the end of a long spur of the Ash Mountains on the northern border of Mordor. The tower overlooks the plateau of Gorgoroth. A road leads northwest from the Dark Tower to the Black Gate, about 100 miles away. Mount Doom is about 30 miles directly west of the Dark Tower. Sauron's Road runs from the western gate of the Dark Tower over an iron bridge spanning an abyss and then across Gorgoroth to the eastern slopes of Mount Doom.