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Installation 04

 Installation 04 was built by the Forerunners to wipe out the parasite of the Flood. It was later discovered by the Covenant and the UNSC ship Pillar of Autumn.


Forerunner-Flood WarEdit

Around 100,000 B.C. a parasite named the Flood invaded Forerunner space. After a three-hundred year long year was fought between the two races. The flood eventually infected much of the Forerunner civilization and the Forerunners built the Ark and the Halo Array (including Installation 04) and activated them and destroyed the flood, most life in the galaxy, and the forerunners themselves.

Unknown DiscoveryEdit

According to the records of 343 Guilty Spark another non-human/Covenant race might have visited the ring.

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