Mars Express reveals purple landscape at Thyles Rupes

New imagery from the European Space Agency’s Mars Express spacecraft has revealed a striking berry-purple landscape at Thyles Rupes, a massive system of cliffs in Mars’s southern highlands. The view, generated using data from the High Resolution Stereo Camera (HRSC), provides a detailed look at kilometer-high scarps and frozen dunes.

The unusual purple and pink tones are not caused by a single mineral, but rather a combination of volcanic minerals, airborne dust, frost, and specific lighting angles. Darker areas contain mafic minerals like olivine and pyroxene, which are common in Earth’s mantle. Lighter, bluish patches consist of carbon dioxide frost and ice deposits from the South Polar ice cap.

Thyles Rupes is believed to be a tectonic feature formed as the Martian crust contracted during the planet's cooling process. The imagery also assists in relative dating of the region, as certain impact craters are intersected by the escarpment, indicating they predated the cliff formation.