'The Dark Tower' of Sauron in Mordor. 329, 334, 347, 363, 365, 375, 377
'The Dark Tower' of Sauron in Mordor.
"... wall upon wall, battlement upon battlement, black, immeasurably strong, mountain of iron, gate of steel, tower of adamant... Barad-dÃ»r, fortress of Sauron."
(The Fellowship of the Ring II 10, The Breaking of the Fellowship)
The mighty shadow-shrouded stronghold of Sauron in the Second and Third Ages.
Other Names: The Dark Tower, LugbÃºrz.
The First Building of Barad-dÃ»r: The first building of Barad-dÃ»r, when Sauron was first came to Mordor, took six hundred years to complete. Soon after, Tar-Minastir of NÃºmenor sent a fleet to Middle-earth, and Sauron's forces were driven out of the western lands that they had roamed at will to that time. Barad-dÃ»r could not be approached by the NÃºmenÃ³reans, however, and Sauron was able to consolidate his power and extend it into the east.
In II 3262, Sauron left his Dark Tower to travel to NÃºmenor with the vast forces of Ar-PharazÃ´n; he returned after the Downfall of NÃºmenor in II 3319. The Last Alliance besieged Barad-dÃ»r in II 3434, and the Tower was taken and destroyed by the forces of Elendil and Gil-galad, who both perished in the siege, in II 3441. Though Barad-dÃ»r was destroyed, its foundations were left in place.
The Second Building of Barad-dÃ»r: For much of the Third Age, Sauron's stronghold was not in Mordor, which was ruled in his stead by the NazgÃ»l. Rather, the Dark Lord dwelt in the south of Mirkwood at Dol Guldur. In III 2941, the White Council sent their forces to drive him from Mirkwood, and he withdrew to Mordor once again. There, he began the rebuilding of the Dark Tower. Given the time taken in its first building, this cannot have been fully complete at the time of the War of the Ring in III 3019.
Barad-dÃ»r was constructed as much through the personal power of Sauron as through stone and mortar; when the One Ring was destroyed in Orodruin, this power was lost and the Tower destroyed forever.
The Appearance of Barad-dÃ»r: The most complete description we have of Barad-dÃ»r is that given in the quote above. We know, then, that it was black, and constructed mainly of metal. 'Adamant' usually refers to diamond, but it is hard to imagine Sauron adding diamond towers to his dark fortress - in this context, it probably has the more general meaning of 'hard, unbreakable substance'.
From the steel gate of the Tower, a causeway ran out into the plain of Gorgoroth, across a mighty bridge. We also know that lava from Mount Doom was channeled back across that plain to Barad-dÃ»r.
Tolkien probably leaves details of the Tower's construction vague intentionally, as it was hidden by a cloud of shadow and darkness at all times. The only characters in The Lord of the Rings to actually see Barad-dÃ»r were Frodo and Sam as they journeyed to Mount Doom: '... rising black, blacker and darker than the vast shades amid which it stood, the cruel pinnacles and iron crown of the topmost tower of Barad-dÃ»r...' (The Lord of the Rings 6 III: Mount Doom).
The 'topmost tower of Barad-dÃ»r' seems to have been the place where Sauron dwelt. At least, the Window of the Eye, from which the Lidless Eye stared out across Middle-earth, was located there.