Arusha
From Halopedia, the Halo wiki
Arusha is a city in Tanzania[1], Africa on the planet Earth.[2][3] It is reachable on Tsavo Highway, which links it to Mombasa and Voi. Arusha is 138 kilometers from Checkpoint B, and 148 kilometers from Traxus Factory Complex 09. In a traffic sign on Tsavo Highway, Arusha is crossed out, meaning either the highway leading there is unsurvivable, or the entire city has been destroyed.