Boulderfist Outpost is a cave carved into the hillside of Boulder'gor in the western Arathi Highlands. It is home to several forest trolls of the Witherbark tribe, in addition to a significant chunk of the Boulderfist ogres. Kovork is a rare spawn inside the cave.
There is speculation that they were separated from their tribe and had some orcish Warlocks among them, which taught their Shamans their magic, so that they turned into Warlocks and could hold this outpost. Another theory is that they were contacted by Demons as they were not strong enough to defend themselves anymore and started to worship these Demons.