War of the Ancients is a raid whose entrance is located in Caverns of Time in the World of Warcraft game. The minimum level for this dungeon is 85. The instance was released in the Cataclysm expansion. The raid contains 0 bosses. The end boss of War of the Ancients is Unknown.
War of the Ancients was a rumoured raid that never came to anything, it was supposed to be set before the sundering when the continent broke up into the individual continents it is now. Some rumoured it might have been reduced in size and turned into the dungeon Well of Eternity. It may come back as a raid or dungeon later down the line.