Grim Batol, once one of the greatest dwarven fortresses, is now home of the Dark Iron clan and the Twilight Hammer. It features a 5-man dungeon, as well as a raid, The Bastion of Twilight. As announced on BlizzCon �9, a new raid will be added to Grim Batol in the last progression patch of the Cataclysm expansion, and its final boss will be none other, but Deathwing himself.

The arrival of the Twilight’s Hammer, a sinister cult who worshipped Azeroth’s malefic Old Gods, seduced by Deathwing’s thirst for absolute domination over Azeroth, has claimed the Twilight Highlands as its base of operations. The black dragonflight has driven off the agents of the red dragonflight who guarded Grim Batol so that it may be used as a fortress for training Deathwing’s minions. The halls of Grim Batol run so deep into the highlands that it is unknown to what twisted end the Twilight’s Hammer is using this doomed dwarven marvel.

Called to action by the red dragonflight in the Twilight Highlands, adventurers will be charged with putting a decisive end to the foul machinations developing within. The army within is lead by General Umbriss.

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