Ark

Arks are massive Forerunner installations designed with the primary purpose of manufacturing Halo rings. Situated outside the Milky Way galaxy, they also served as Lifeworker research facilities, as well as conservational preserves for the numerous species of the galaxy during the Conservation Measure. The Arks were shaped like massive flowers, consisting of several curved arms, similar to the petals of a flower, surrounding a circular foundry in the center.

Two Arks existed during the Forerunner-Flood war; the greater Ark, which produced Halos 30,000 kilometers in diameter, and Installation 00 or the lesser Ark, which produced rings 10,000 kilometers in diameter.

List of appearances

 * Halo 2
 * Halo 3
 * The Forerunner Saga
 * Halo: Cryptum
 * Halo: Primordium
 * Halo Graphic Novel
 * Second Sunrise Over New Mombasa
 * Halo Legends
 * Origins
 * Homecoming