Corp'rethar: The Horror Gate

Corp'Rethar: The Horror Gate is the last line of defense used by the Scourge. Behind this gate lies the infamous Icecrown Citadel, the seat of power for the Lich King.

Thassarian or Koltira Deathweaver send the player to weaken the gate's defenses by slaying the Guardians of Corp'rethar and by taking out the three shards that would inflict massive casulties upon the upcoming assault force.

After these quests the final defense lines are broken and the path to Icecrown Citadel is cleared for the upcoming assault.