Zin'rokh, Destroyer of Worlds

Zin'rokh, Destroyer of Worlds is a rare archaeology artifact that requires 450 skill to find and 150 Troll Archaeology Fragments to solve. Up to three keystones may be used to complete it.

Trivia
The ominous statement about Hakkar's possible return and the events of Northern Stranglethorn's quest chains are obvious foreshadowing to the return of Zul'Gurub as a dungeon, which was later confirmed to be the case when patch 4.1 was announced.