Mombasa suburb on the mainland which contains a beach, oil refineries, housing estates etc. Moi International Airport and the Port Reitz District Hospital are in Port Reitz. Mombasa is also a county and divided into six constituencies and thirty wards. Mombasa is a major trade centre and home to Kenya's only large seaport, the Kilindini Harbour. "Kilindini" is an old Swahili term meaning "deep". The port is so-called because the channel is naturally very deep. Kilindini Harbor is an example of a natural geographic phenomenon called a ria, formed at the end of the last glacial period when the sea level
Mombasa–Nairobi Standard Gauge Railway transportation corridor between Tsavo East National Park and Tsavo West National Park. Because they are at ground level, collisions with wildlife occur. The viaducts and embankments elevate the SGR above ground level, allowing wildlife to pass safely underneath. Six underpasses also allow wildlife to move safely beneath the SGR. Passenger trains run between Mombasa Terminus in Miritini and Nairobi Terminus in Syokimau, which is near the Jomo Kenyatta International Airport Freight services are provided between Port Reitz, which is just west of Mombasa Island, and the inland container depot in the Embakasi division of Nairobi. There are nine passenger stations