Deadwind Pass is a contested zone located in central Azeroth, joining the southeastern reaches of the Kingdom of Stormwind (via Duskwood) from the east to the Swamp of Sorrows (and, eventually, the Dark Portal in the Blasted Lands) from the west. It was, a score of years ago, considered a part of the Redridge Mountains.
The Ivory Tower of Karazhan, once the dark wizard Medivh's seat of power, stands in the center of this jagged region and leaks evil magic into the land. The trees are petrified and leafless, and a terrible wind keens through the canyon. Ogres, demons, undead and a few human gypsies roam the interior. Deadwind Pass connects Duskwood and the Swamp of Sorrows, and travelers are advised to move quickly whispers tell that a new force has claimed the Ivory Tower, and that the ogres and demons are under its sway.
The tower's builders have been lost to time, but surely they were great and terrible people to have built such a foreboding and yet magnificent structure. Medivh was sought out and killed during the First War, and the tower has since been apparently abandoned, though unknown dangers yet lurk within.
It is unclear who murdered all the villagers in the southern part of the chasm. It may have been Medivh or some force he summoned. Another theory states that it was the Black Riders, who have a hunger for death and seek to obtain the dangerous Scythe of Elune for their own purposes.