Installation 07

Installation 07, also known as Zeta Halo, is one of the seven rings in the Halo Array. Unlike the other six remaining Halo installations, which were constructed as a separate array of rings with the diameter of 10,000 kilometers, Installation 07 is the only surviving ring from the original main array of twelve 30,000-kilometer-wide Halos. However, the installation's diameter was reduced to 10,000 kilometers after most of its superstructure was discarded as a result of heavy damage. Through unknown means, the Office of Naval Intelligence later managed to perform a cursory examination of Installation 07, discovering its size and deducing that its surface was overrun by a perpetual cloud cover, although information on the ring remained sparse. The cloud-covered surface led an ONI scientist to speculate on whether the ring's life support systems had never recovered from the damage it sustained 100,000 years prior.