ONI Alpha Site (Earth-2042)

ONI Alpha Site was a Galactic Republic Office of Naval Intelligence facility located in an isolated compound within Sector 10 of New Masia, Kenuan, on Onderon. Officially, it served as the ONI's headquarters in the East Onderonian Protectorate; secretly, it was also used to aggregate data from the Forerunner artifact below it.

Source

 * https://www.halopedia.org/ONI_Alpha_Site