Colombo Space Tether
From Halopedia, the Halo wiki
The Colombo Space Tether is a space elevator built on Earth, presumably at the eponymous city of Colombo, Sri Lanka. The tether survived the Battle for Earth in 2552 and was spared the disastrous fate of the Mombasa Tether and Centennial Orbital Elevator.
- Halo Encyclopedia (2022 edition), page 32