Mount Hyjal

Mount Hyjal is a mountain located in northern continental Kalimdor that served as the home of the World Tree Nordrassil, and the final battlefield of the Third War. After the Great Sundering, Mount Hyjal was the first place the surviving members of the Kaldorei Resistance arrived at, and this was the place where Illidan Stormrage created the second Well of Eternity, which led to the creation of Nordrassil. After the Cataclysm occured, Mount Hyjal was attacked by the Twilight's Hammer. It was also the base of operations for Ragnaros' forces, at the Sulfuron Spire.