Find the Page of Deceit

Journal
''The Oracle tasked me with finding 8 pages of the Book of Dire Prophecy! One of the pages could be found in the ruins of Opalis. Although the ruins are in an area outside the protection of the Oracle, rumors exist of underground passages into the ruins of the old world that can bypass this.''
 * What you actually need to do, is enter the Opalis Vault. The Opalis Vault can be entered into from The Rise or from the Opalis Ruins.