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How Old are Martian Gullies?
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
Gullies eroded into the steep inner slope of an impact crater at this location appear perfectly pristine in this image captured by NASA's Mars Reconnaissance Orbiter (MRO). Although at first glance it may appear that there are craters superimposed on the gully fans, inspection of HiRISE stereo coverage shows that the craters lie only on the pre-gully terrain. Distinctive colors in the gully channels and alcoves offer another indication of youth and recent activity.
NASA Image and Video Library’s own descriptionCredit lineHow Old are Martian Gullies?. NASA/JPL, 2017-04-24. Public domain. ID: PIA21599.
