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Mars Express flew over the boundary between Kasei Valles and Sacra Fossae and the High-Resolution Stereo Camera (HRSC) operated by the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) imaged the region, acquiring spectacular views of the chaotic terrain in the area. The images are centred at 12°N, 285°E and have a ground resolution of about 21 metres per pixel. They cover 225 kilometres by 95 kilometres or 21,375 square kilometres, an area roughly half the size of the Netherlands.
The image shows an old 35-kilometre diameter impact crater in the north. The crater’s southwestern rim is heavily eroded. The erosion was caused primarily by flowing water. The source of the water was located in Echus Chasma, which lies roughly 850 kilometres to the southwest.
Credits: ESA / DLR / FU Berlin (G. Neukum).
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