Cave Trolls can toggle between their default mode of throwing rocks and merely using their large fists. In their rock-throwing mode they are not the most effective, as most enemy siege weapons can out-range them (i.e. the Dwarves' Iron Hills catapults, or more relevantly the Mountain Giants); for functioning as a ranged siege-weapon, Mordor's Mountain Trolls are better suited. However, the other special attack of the Cave Trolls is their ability to pick up and throw nearby goblins at enemy units.