Unidentified Forerunner planet

This unidentified planet is a world that was part of the Forerunner ecumene prior to the Flood invasion. The surface of the planet was covered in massive Forerunner structures and glyphs.

Trivia

• The Forerunner symbol for the number "0" appears throughout the planet's surface. This is also the symbol for the Iris campaign.
• During Origins, a structure on the planet can be seen being attacked by the Flood, identical to a playspace concepted for inclusion in Halo 3 known as "The Lost City".

Gallery

• 

  The Lost City, as seen in Origins.

List of appearances

• Halo Legends
  • Origins (First appearance)