Following up on our April 2025 release, which explored the eastern part of Acheron Fossae, this HRSC image reveals the western edge of the region. Just a quick reminder: Acheron Fossae is located about 1200 kilometers north of Olympus Mons – the tallest shield volcano in our solar system. The entire ridge stretches roughly 800 kilometers and rises in the shape of an arc on the Martian surface – perfectly reflecting its name. On its northern and western side, the arc-shaped ridge transitions into the flat plains of Arcadia and Amazonis Planitia. To the south, the rift system scratches at the vast Aureole deposits – massive landslide accumulations formed by repeated collapses of Olympus Mons’ flanks (see context map).