Patch 4.1.0: Rise of the Zandalari was the first major content patch for the World of Warcraft: Cataclysm expansion. Among other changes, it featured the return of the Zul'Aman and Zul'Gurub raids as 5-player normal and heroic dungeons.
Alarmed by the terrible losses of life among all trolls, the Zandalari tribe traveled around the world to reunite their race and rebuild their once-powerful empire. The Zandalari restored the fallen cities of Zul'Gurub and Zul'Aman, and begun to conduct bloody raids on territories that had once been "theirs." The burgeoning troll force hoped to lead a great war against the other races of Azeroth, but the honorable Vol'jin of the Darkspear tribe stood against their murderous agenda, and recruited champions from both the Horde and the Alliance to invade the ancient cities and stop the onslaught.