Staff of Prehistoria

The Staff of Prehistoria had been required in order to access Ironaya in the Chamber of Khaz'mul.

Source
This item can be acquired by combining two items found in Uldaman.

Notes and trivia

 * Mathias Shaw knows about the use of the Staff in the Chamber of Khaz'mul, and he hasn't seen anyone carrying it.
 * Spelling the names of the shaft and medallion backwards give Lost Viking.