Speak with Stone Guard Stok'ton in Hellfire Ramparts.
Description
With the Legion to one side and the fel orcs to the other, Thrallmar is going to be overrun if we don't do something about it.
$Head west to the Hellfire Ramparts and speak with Stone Guard Stok'ton. He's in charge of a covert operation to start a Horde invasion on the entire citadel.
Reward
Also, you get:
28
Completion
Shatterskull's not personable by anyone's standards, but he certainly gets the job done. Let's put you to work.
Gains
Upon completion of this quest you will gain:
Additional Information
