- "Sitting astride the open top of a dormant smoker stack, this enormous Arc Cannon is constantly scanning the atmosphere for targets, firing bursts of deadly energy at enemy vessels in orbit. Simultaneously, a ground battle rages in and around the superstructure of the cannon, the engagement intensified by the blinding flash and thunderous blast of the cannon bringing down another enemy warship."
- —Killzone.com Description
Zenith is a Killzone: Mercenary online multiplayer map.
Zenith is set around an Arc Cannon, every so often it will fire and cause a tremor. It also features a lift that can travel between the control room and a maintenance area. Additionally, you can traverse the power supply cables and support structure of the cannon.