Throne of the Four Winds
is a raid in the Skywall complex introduced in World of Warcraft: Cataclysm
. It can be found off the southwest coast of Uldum
at [38, 81]
high in the air.
This dungeon, along with Bastion of Twilight and Blackwing Descent, is meant to an entry level raiding instance, much as "Naxxramas" was for Wrath of the Lich King or Karazhan was for Burning Crusade. 
The final boss of the raid instance (Al'Akir, does also have a low chance to drop the mount Reins of the Drake of the South Wind. The mount has the same chance to drop on all difficulties.
| How to find the entrance
25man.com Throne of Four Winds Tactics & Strategy Guides
Icy Veins Comprehensive encounter guides for Throne of the Four Winds