Public domain
The Velvety Blue Dunes of Melas Chasma
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
This color-infrared image shows sand dunes in Melas Chasma, located within the Valles Marineris canyon system. The dark-blue and purple colors indicate coarse-grained sands that are comprised of basalt, an iron and magnesium-rich volcanic rock that formed from cooled lava millions of years ago when volcanism was an active process on Mars.
NASA Image and Video Library’s own descriptionCredit lineThe Velvety Blue Dunes of Melas Chasma. NASA/JPL, 2018-10-01. Public domain. ID: PIA22783.
