Slave Pens

The Slave Pens are the first 5-man wing within the Coilfang Reservoir. The instance is harder than both the Blood Furnace and the Hellfire Ramparts, but the loot drops are of much greater quality.

Background
Here, concealed by the cold fathoms, Lady Vashj's naga ply their resources - the exotic flora and fauna of the cavernous Underbog, the Broken who toil in their claustrophobic Slave Pens, and the arcane machinery they've constructed in the Steamvault - towards a catastrophic goal set forth by Illidan the Betrayer. Unopposed, they will drain Zangarmarsh's waters, and claim dominion over the dry bog that remains.

Dungeon Journal
''Coilfang Reservoir is the name for a naga-dominated compound that lurks under Zangarmarsh's deepest waters. The reservoir, punctured throughout by massive open pipes and pistons, seems big enough to house armies - and, yet, its purpose isn't strictly military.''

Dungeon denizens
Normal mode bosses are all level 64 Elites, while Heroic Mode bosses are all level 72 Elites.

Reputation
Slave pens gives Cenarion Expedition Reputation through Friendly, and through Exalted on Heroic. An average Heroic run will give roughly 1850 rep.

Achievements

 * The Slave Pens (achievement)
 * Heroic: The Slave Pens
 * Heroic: The Slave Pens Guild Run
 * Ice the Frost Lord