Public domain
Sinuous Ridge on the Orson Welles Bajada
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
Alluvial fans are piles of debris dumped by rivers when they emerge from the mountains and enter a mostly dry valley as seen by NASA Mars Reconnaissance Orbiter. A bajada (such as this example named after the famous American filmmaker) consists of a series of coalescing alluvial fans along a mountain front. On the surface of this bajada, one can see many sinuous ridges. These ridges mark the path that streams of water took as they flowed into this crater.
NASA Image and Video Library’s own descriptionCredit lineSinuous Ridge on the Orson Welles Bajada. NASA/JPL, 2015-04-22. Public domain. ID: PIA19366.