While there, the Banished set up bases and salvage operations across the Ark. One month later, on November 25, a powerful Covenant splinter group, known as the Banished, arrived and raided the United Nations Space Command research outposts on the surface. On October 28, 2558, during the Created's subjugation of Earth, the portal to the immense, extra-galactic Forerunner installation known as Installation 00, or 'the Ark,' shut down.