Public domain
Marvelous Martian Mega-Ripples
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
Mega-ripples are distinct wind-driven formations that occur on the surface of Earth and Mars, often with sizes between that of smaller ripples and larger dunes. Based on their shapes and examples of fractured crests in some areas, mega-ripples are thought to be largely inactive relics of past climates. Thanks to repeat coverage by HiRISE, we can tell that some mega-ripple fields are active and migrating alongside dunes and ripples.
NASA Image and Video Library’s own descriptionCredit lineMarvelous Martian Mega-Ripples. NASA/JPL, 2022-07-22. Public domain. ID: PIA25449.
