The mighty fortress carved within the fiery bowels of Blackrock Mountain was designed by the master dwarf-mason, Franclorn Forgewright. Intended to be the symbol of Dark Iron power, the fortress was held by the sinister dwarves for centuries. However, Nefarian - the cunning son of the Dragon Aspect Deathwing - had other plans for the great keep.
Nefarian and his draconic minions took control of the upper spire and made war on the dwarves' holdings in the mountain's volcanic depths. Now, the dragon has carved out a swath of the spire and set the generals of his increasingly large army - including Rend Blackhand, the warchief of the Dark Horde - to defend the peak while he continues his sinister experiments. The spawn of Nefarian continue to creep from Blackrock Spire - and will do so until the keep can finally be broken.