Effigy of Gehn
The Moiety constructed a wooden effigy of Gehn. It stood holding the Linking Book back to Riven, as a reminder of the cause of the Moiety. There are many daggers stuck into the figure, each one representing a Moiety who lost their lives in the struggle against Gehn.
This effigy expresses the Moiety's animosity towards Gehn quite prominently, as well as displaying a warning to whoever wants to use the Riven Book that they are about to enter Gehn's domain. It can be assumed that after Riven collapsed, the Rebels threw the book Linking back to it, crystal and all, into the lake outside the linking cave, and set the effigy on fire as a sign that Gehn is gone for good.