A battering ram in The Lord of the Rings, named after a hammer from the underworld, used by an army of Sauron's to break open the gates of Minas Tirith. Its face is that of a wolf's, it is drawn by beasts, guided by orcs, and heaved by trolls, and powered by the lord of the Nazgul by "speaking in some forgotten tongue words of power and terror to rend both heart and stone."