Unus

Unus was one of the five planets within the Halo System and was the closest one to the orbit of the star. It was known to be the most uninhabited planet out of the five, supporting roughly five clan factions in the central and southern arctic regions. The most notable event to take place on the planet was the birth of the human and Snagheili species alike, along with the formation of the first clans and bloodlines around 300,000 BST during the primitive ages.