Zeta Hydronis Secundus system

The Zeta Hydronis Secundus system is a planetary system within the Forerunner ecumene. At the height of Forerunner power the planetoids on the system hosted thriving colonies and impregnable fortresses, but during the Forerunner-Flood war the system fell before the parasite. In the post-war era, the UNSC found the system, designating Site C to a handful of intact Forerunner structures.

List of appearances

 * Halo 5: Guardians