The Mechagon Megadungeon is a stepping stone for the raid that is released at the same time, Azshara's Eternal Palace where Queen Azshara awaits your doom. The Megadungeon is the centrepiece of the island.
The Megadungeon will contain eight dungeons and will only be available at Mythic level to start with. Blizzard will be forcing you go improve in order to gain access to the dungeon. The main dungeon contains gnomes like in Gnomeregan at the early levels.
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