Barrow Deeps

Hidden beneath Kalimdor, this prison held Illidan Stormrage for 10,000 years, and now its dark passages have been opened. Descend into it to learn what became of those left behind, and how the wardens plan to contain the danger below.

Entrances connected to Mount Hyjal, Winterspring and Blackmaw Hold give you multiple ways in. Inside, 10-player groups face eight bosses as they explore the prison's depths.[1]