After the Longbeards routed them from the stronghold of Thorin's Hall, the Dourhand dwarves scattered, maintaining only their hold upon the port of Kheledûl and several small encampments among the Blue Mountains. Many travelled beyond the Ered Luin at the command of a wight masquerading as their chieftain, Skorgrím. While regathering their strength, they discovered the ruins of one of the ancient cities of their forebears, a long-abandoned delving that they renamed Sarnúr.
In Sarnúr, the Dourhands and their evil allies are mustering their forces to begin a final assault upon the Longbeards of Thorin's Hall and the Elves of Duillond. The dwarves of the Blue Stone Garrison have begun recruitment efforts to turn aside the wrath of the Dourhands by going on the offensive. Until the threat from Sarnúr is removed, the dwarves of Thorin's Hall will be able to lend little aid to the efforts against Angmar.