Rust Sea

The Rust Sea is an area of unstable planetary matter and molecular flux located along Cybertron's equator, stretching from Tyrest to Polyhex in the west, to the borders of Tarn to the south. It constantly emits a collection of corrosive, yet relatively harmless gasses. It is Cybertron's most prominent sea, the only other one known being the Mithril Sea.

The Hydrax Plateau rises out of the center of the sea.

MUX History
Cybertron's primary spaceport was once located here, before being destroyed by the Decepticons.

Shattered Glass History
Cybertron's primary spaceport was once located here, before being destroyed by the Autobots.