"Odina Fortress" is not an official name.
After the Shadowed One and Ancient successfully displaced the native population of Odina, construction of the fortress of the Dark Hunters began. The fortress was massive, covering most of the southern area of the island, and was heavily protected. The courtyard of the fortress was an arena where the Dark Hunters, and potential candidates, trained and engaged in combat, often to the death. The fortress itself was often guarded by especially powerful Dark Hunters, such as Prototype and Minion.
Inside, the fortress contains numerous passages, traps, dead ends, and various other rooms and storage areas. There are many prisons, some for prisoners such as a friend of Mimic, and others for more specialized purposes, such as Savage's containment cell. The walls, corridors, and rooms of the fortress shift and changed according to the Shadowed One's thoughts, so that he could herd intruders wherever he wanted.
When Ravager was brought to Odina, he escaped his captors, and nearly destroyed approximately a third of the base. Instead of being punished, he was recruited, and the damage from the incident has since been repaired.
The fortress was later turned into dust by a timed shockwave set by Toa Nuva Pohatu. The Dark Hunters attempted to rebuild it, but abandoned their efforts when they were forced to relocate to Xia by Teridax's Rahkshi.
The Shadowed One's Chamber
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