Grond

Grond was a battering ram, used by Sauron's forces to destroy the Great Gate of Minas Tirith during the Battle of the Pelennor Fields. The ram was "a hundred feet in length", and its head was of black steel, made to resemble a wolf. It is told that Grond had been induced with "spells of ruin". During the Siege of Gondor, Grond was drawn to the Great Gate by "great beasts" and was wielded by mountain-trolls.
== History ==
Grond was forged in Mordor by Smithies of Barad-dûr during the final years of the Third Age, specifically for use by the army besieging the city of Minas Tirith in Gondor. It shared its name, in homage, with the "Hammer of the Underworld," a great mace wielded by Morgoth, Sauron's former master.
Grond was said to be 60 feet high, 150 feet long, and as thick around as an enormous tree, making it much larger than any other such battering ram in Middle-earth. Fire burned in its great maw. It was operated by a team of great beasts, escorted by a band of orcs, and several trolls were needed to utilize it. The creatures pulling it would occasionally go mad and run through the battlefield, trampling anything and anyone underfoot. Aided by the "spells of ruin" laid on it during its forging in Mordor, and by the Witch-king of Angmar during the Siege, Grond smashed open the formidable gate of Minas Tirith with just three or four blows.