Blackwing Lair

Blackwing Lair is a level 60, 40-man raid dungeon located at the top of Blackrock Mountain, home to Nefarian. It was implemented in patch 1.6.

Dungeon Journal
''In the dark recesses of the mountain's peak, Nefarian, the eldest son of Deathwing, conducts some of his most awful experimentation, controlling mighty beings like puppets and combining the eggs of different dragonflights with horrific results. Should he prove successful, even darker pursuits rest on the horizon.''

''And, yet, the Lord of Blackrock is not a mere scientist - he is a great dragon cornered in his lair. Can he truly be defeated by mortal hands?''

History
Nefarian has vowed to crush Ragnaros. To this end, he has recently begun efforts to bolster the black dragonflight, much as his father Deathwing had attempted to do in ages past. However, where Deathwing failed, it now seems the scheming Nefarian may be succeeding. Nefarian's mad bid for dominance has attracted concern from the red dragonflight, which has always been the black flight's greatest foe. Though Nefarian's intentions are known, the methods he is using to achieve them remain a mystery. It is believed, however that Nefarian has been experimenting with the blood of all of the various dragonflights to produce unstoppable warriors, accomplishing what his father failed, the creation of the Chromatic dragonflight.

Besides the twisted dragonflight, other experiments took place in these halls, including manipulation with dragon bones and eggs. Nefarian also captured and corrupted Vaelastrasz, while his creation Chromaggus survived and guarded the lair.

Due to Moira Thaurissan who sent information on Nefarian and the Dark Horde all over Azeroth, the Horde leadership in Orgrimmar learned truth about their orc brethren in Blackrock Mountain. As such, Horde heroes invaded the lair, cut through the twisted experiments and slew Nefarian in his sanctuary. Although defeated, the Nefarian's broken corpse was later collected by the Twilight's Hammer cultists who brought him back with Void magic as an undead monstrosity.

Some time after the Fourth War, 7 agents thoroughly investigated the lair and found references to similar experiments that may predate Nefarian. They collected the material for further study.

Geography
Port in by using the Orb of Command located at the end of the hall to the right of the entrance to Blackrock Spire (The attunement quest Blackhand's Command (quest) is no longer necessary and has been removed from the game).

Loot
With Transmogrification many players want to run Blackwing Lair for the distinctive weapons, including Claw of the Black Drake, Dragonbreath Hand Cannon, and Chromatically Tempered Sword.

As of Patch 5.1, three bosses drop battle pets: Razorgore the Untamed drops the Unscathed Egg, Broodlord Lashlayer drops the Blackwing Banner, and Chromaggus drops the Whistle of Chromatic Bone.

Resources
Elementium Ingot is found as a rare drop from the that inhabit the lair. This ore is used to smelt Enchanted Elementium Bar, needed for Thunderfury, Blessed Blade of the Windseeker. Players can also learn Goblin's Guide to Elementium.

Quests

 * The Lord of Blackrock

Achievements

 * Blackwing Lair (achievement)
 * Blackwing Lair Guild Run