HiRISE PICTURE OF THE DAY: 10 MAY 2026
An Alluvial Fan in Shalbatana Vallis
This observation shows a well preserved alluvial fan in Shalbatana Vallis, with exposed channel structures in its distal margins. HiRISE was requested to investigate its formation. Shalbatana Vallis contains the first definitive evidence of an ancient Martian shoreline.