Thrym's End is an area in Zul'Drak where undead vrykul, or vargul, have been found preforming experiments for the Scourge. Gerk and Burr, members of an Argent Crusade in charge of establishing a battle front, can be found here, the remaining members can be found at Crusader Forward Camp. Gymer, the storm giant king, can also be found here in a gigantic cage.