Odin's Eye

Details

 * The Odin's Eye is located onboard the highly classified Point Of No Return.
 * Odin's Eye is described as a round room with a large round, black confrence table in the center.
 * There is no visible door to enter Odin's Eye, a bio-scanner confirms your identity ans opens an entrance. Kurt Ambrose notes that there is no crease where the slide apart items meet.
 * Kurt-051 was informed that he would train the Spartan-IIIs here.
 * Not many people have proper clearence to access this room.
 * Like Odin's Eye, there are not many obvious doors within the UNSC Point Of No Return.

Source
Halo: Ghosts of Onyx