The Sunwell Plateau is a raid instance located on the Isle of Quel'Danas north of Silvermoon City. Blizzard planned for it to become the hardest raid instance in the game until the release of Wrath of the Lich King. The Sunwell Plateau is tuned for Tier 6-geared players and the gear that drops from the first three bosses are additional Tier 6 items (boots, belt and bracers), and non-set epics as well.
The instance contains both outdoor areas and building interiors, where players will find captured naaru, which are the primary power source of the town, and inside the final building the Sunwell itself.
The architecture of the Sunwell Plateau is comparable to that of Silvermoon City.
The instance was open to players right from the start of patch 2.4, but the last 3 bosses were only available as each gate - which blocked the next boss encounter - opened over a set period of time on all servers. (Although this happened on maintenance day, so the US had an apparent one day advantage over the EU servers)[1] The first gate was opened on 8 April 2008 in the US, two weeks after the patch went live. The second gate opened after weekly maintenance on April 29, 2008. The third and final gate was opened on May 20, 2008 on US realms. The difficulty of the instance was set at the first 3 bosses being on par with Tier 6 encounters, and then the last three and increasing from each.