Duo

Duo is the second planet that orbits the star of the Halo System and like Unus, it too has a very low clan population. Most of the clans that still inhabit the regions are older and well established. The planet mainly consists of tropical and forested areas, with desert and tundra locations too, however, these places do not offer a very hospitable environment to humans or Sangheili alike. The last known conflict of territorial contentment on Duo was roughly around 84 BST where two large U.N.S.C. factions fought over a coastal territory that would be used to construct a weapons factory.