UNSC Fathom

UNSC Fathom is a UNSC research base deep under one of the oceans of the UEG inner colony world Beta Gabriel. The staff of the Fathom are actually treasure hunters.  

Trivia

 * The Halo 5: Guardians multiplayer map Fathom is set on the UNSC Fathom.

Appearances

 * Halo 5: Guardians