Den of the Caller
From WoWWiki
The Den of the Caller is located inside the Temple of Atal'Hakkar. It is the chamber where Kazkaz the Unholy is tended to by his Atal'ai servants whenever he is not preaching at the altar in the Chamber of Blood, which is accessed through a short tunnel. The Den of the Caller also connects to the Hall of Masks, the Butchery, and the Hall of Ritual via narrow passages.
