The Halls of Origination are part of the Titan research facility of Uldum. Along with Ulduar and Uldaman, it was used by the Titans thousands of years ago. Unlike the other two, the Halls' purpose was not to be a prison--it was used for research and development of new races. One of those races was the Tol'vir - a mix between humans and cats, most of which populate the other Uldum dungeon, the Lost City of the Tol'vir, where it is rumored that a deadly secret is hidden.

This dungeon is required for the guide if you need help!