Mombasa Tether

The New Mombasa Orbital Elevator is a massive Space Elevator located at the center of the city of New Mombasa on Earth. The elevator, which is the focal point for the city, stretches far into the planet's orbit. It is used for lifting heavy ordinance into the atmosphere of the planet using a pulley system that negates the use of rockets or waste of fuel to generate an escape velocity for materials.

In 2552, when the city was attacked by the Covenant during The First Battle of Earth, the Assault Carrier commanded by the High Prophet of Regret landed troops around the elevator. Eventually, it was destroyed when Regret's flagship made a Slipspace jump in-atmosphere, unleashing a blast wave that wrecked much of the city. Remains of the elevator crashed to the surface around the Portal.

Trivia

 * It can be seen throughout the levels Outskirts and Metropolis.
 * The third mission of Halo 3, Tsavo Highway, features the remains of the Space Elevator now scattered across the African plains.