It was previously impossible to obtain because the 'locked door' to the room is (according to the minimap) a wall. This also means that it was impossible to cast Telekinetic Grab here. However, if the hard tasks of the Western Provinces Diary is completed, the wall can be opened to pick up the skull.
This skull can be used to create an ancient gorilla greegree that allows the player to transform into an ape similar to the bearded gorilla greegree with a blue face.
- This item has existed since Monkey Madness I was released, but was not obtainable until the release of the Western Provinces Diary on 5 March 2015.