Kel'Thuzad's Chamber is the final room of Naxxramas and the inner sanctum of its dread master. It is only reachable after defeating Sapphiron.

v • d • e Subzones of Naxxramas Arachnid Quarter (Maexxna's Nest) · Construct Quarter (The Halls of Reanimation) · Frostwyrm Lair (Kel'Thuzad's Chamber · Sapphiron's Lair) · Military Quarter (The Horsemen's Assembly) · The Outer Ring · Plague Quarter (The Necrotic Vault)