The Undead troll is an undead version of a troll. Being undead, they are vulnerable to the effects of a Salve amulet. They can be also killed for a troll slayer assignment. They can be found in Lucien's camp and are mixed with Elite Black Knights, who are aggressive unless the player is wearing Dagon'hai robes or Elite black armour. To access Lucien's camp, you need to have at least made some progress in the While Guthix Sleeps quest. The undead trolls wielding pickaxes are never aggressive, while the unarmed trolls are aggressive in the same fashion as the Elite Black Knights.