Known as the Gunflint Formation, its deposits are usually rust red from the oxides in them.

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The humpback chub, for example, thrived in the rust-red waters of the Colorado.

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Here, the deep burnt sienna red of the soil - rust-coloured because of its richness in iron - mingles with thickets of foliage and a sweep of clear sky.

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The red isn't the red we painted, it's just rust.

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Its red sands are also full of iron, turned to rust by atmospheric oxygen.

NEWYORKER: The Martian Chroniclers

In 1988, Mathias Rust was released by the Soviet Union after he landed a plane in the Red Square.

CNN: Saturday,