Onyxia's Lair was originally a level 60 raid dungeon located in Dustwallow Marsh, home to Onyxia. The original incarnation of the instance was one of two raid dungeons available upon release of World of Warcraft, the other being Molten Core. In Patch 3.2.2 the instance was retuned as a raid dungeon for level 80 players in honor of the World of Warcraft 5-year anniversary. The original 40-man version is no longer accessible.