Mount Hyjal is a level 80-82 contested zone opened up for general access in the Cataclysm expansion. Hyjal is under heavy siege by Ragnaros, who is trying to destroy the World Tree, Nordrassil. Malfurion Stormrage has returned from the Emerald Dream, and commands the armies of Cenarius, known as the Guardians of Hyjal. The zone makes extensive use of the terrain phasing technology.