"Between Duskwood and the Swamp of Sorrows lies the desolate region of Deadwind Pass, where jagged, brooding spires of granite loom over petrified, lifeless forests. As its name suggests, it is a land devoid of life.
But it was not always so...
Medivh, the Last Guardian, made his home in Deadwind, in the bright tower of Karazhan. Though he was the greatest wizard of his day (and humanity's intended custodian) Medivh was secretly possessed by the dark spirit of Sargeras, the Destroyer of Worlds. Through Medivh, Sargeras opened the Dark Portal and allowed the orcs to wage war upon the mortal kingdoms of Azeroth."
Links
wow-europe.com - Kharazhan Details