Old Mombasa
From Halopedia, the Halo wiki
Old Mombasa is the older part of the historic city of Mombasa. Old Mombasa serves as a reminder from where New Mombasa sprouted from years ago. The old city is somewhat run down and neglected when compared to the massive metropolis of New Mombasa.
Old Mombasa suffered quite a bit at the hands of the Covenant during their invasion in October of 2552.
It is the location of the Outskirts (Level), as well as the location of the Multiplayer map Turf (Level).
The city appears to have been abandoned prior to the Covenant invasion. The sky above is a misty orange, perhaps suggesting high levels of pollution.