This dungeon with hidden entrance, hidden doors and hidden traps is on the Tokuno island of Isamu-Jima. Entry is granted only to those who have taken one of a number of quests. Elder Acob the Wise in Heartwood and Sarakki the Notary in Britain both give such quests.
Occupants of the dungeon are elite ninjas, the three sects of the Black Order of ninjas and the peerless changeling, Travesty. The Citadel Route Finder can help travellers navigate through this dungeon. Special items can also be found within the dungeon which, when clicked, initiate a quest dialogue.