Hydrax Plateau

The Hydrax Plateau is an island in the center of the Rust Sea. It holds Cybertron's primary spaceport, where planetary visitors must check in first.

Transformers: Exodus
The Hydrax spaceport was one of the glorious projects of the Golden Age of Cybertron. Bordering the Decepticon-occupied Badlands, it was of key importance, and the siege on it was the second engagement in the war. Decepticons marching from the newly conquered Fort Scyk to the east were held back by Ultra Magnus and the Wreckers, while Optimus Prime held off the southern advance in his first battle. Though Hydrax was surrounded, with the Sea of Rust limiting Autobot support, and ultimately, the Decepticons won.