From Halopedia, the Halo wiki
Kikowani was a district of the city of New Mombasa, Kenya, Earth. It was located on the northeastern side of the city, next to the large seawall surrounding the Mombasa island. Just beside Kikowani to the southeast were the city center and Tanaga.
A battle also took place here, between a squad of ODSTs, and a large number of Covenant forces, including a Scarab. During the battle, the ODSTs destroyed multiple Huragok Recharge Stations, as well as most of the Covenant forces present in the area, before flying out of the city through a tunnel in a stolen Phantom dropship.
Kikowani district contained multiple open areas, housing corporate buildings, separated by large walls with tunnels inside them. The tunnels were accessible through massive doors. NMTA's Kikowani Station was located here, accessible from the city's Sector 0.
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