KING UNDER THE MOUNTAIN

KING UNDER THE MOUNTAIN is the nomenclature used to refer to any files pertaining to the planet Onyx. It was assigned on March 6, 2525 by Vice Admiral Margaret O. Parangosky

The File
While searching through James Ackerson's files Dr. Halsey found a file entitled KING UNDER THE MOUNTAIN.

The KING UNDER THE MOUNTAIN file contained:


 * Information on the Forerunner artifact found on Sigma Octanus IV.
 * The original blueprints for CASTLE Base and the mines beneath.
 * The debreifing of Spartan-117 after the Battle of Sigma Octanus IV.

Conclusions
Due to the order that ALL materials and files relating to Onyx was to be redesignated under KING UNDER THE MOUNTAIN, we can conclude that Ackerson was using the Forerunner data in the file to search for technology to use against the Covenant or for his own personal means.

Trivia

 * The name "King under the Mountain" was also used in the book "the Hobbit".