Board Thread:Dark Souls II/@comment-92.237.7.185-20140321174248/@comment-81.106.40.221-20140323225734

The face is a key-door, you get the Pharros' lockbox, and put it into the 'mouth' of the contraption, immediately on the wall will appear a ghostly image of the face, hit it and it will change into a doorway which you can walkthrough to obtain two chests, one contains the Chlorothathy ring *Something like that*, which increases your stamina recovery speed, and I forgot what was in the other one. This face by the way can be found under the ballista trap with multiple Hollow Soldiers.