Ark

Arks are massive Forerunner installations designed with the primary purpose of manufacturing Halo rings.

There are two classifications of Ark: Lesser Arks, which produce rings 10,000 kilometers in diameter, and Greater Arks, which produce rings 30,000 kilometers in diameter. The only Ark known by designation, Installation 00, was a Lesser Ark.

Known Arks

 * Installation 00
 * An unidentified Greater Ark (produced Installation 07)
 * Unknown number of various other Arks.

List of appearances

 * Halo 3
 * Halo: Cryptum
 * Halo: Primordium