Public domain
The Hoodoos of Mars
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
On Mars, NASA's Mars Reconnaissance Orbiter often sees inverted river channels preserved perched above the surrounding terrain because the sediment inside the river channel was stronger than its surroundings. This is common in the American Southwest in places where lava flowed down river channels and the surrounding sandstone subsequently eroded away leaving ridges in places that started as valleys.
NASA Image and Video Library’s own descriptionCredit lineThe Hoodoos of Mars. NASA/JPL, 2017-08-21. Public domain. ID: PIA21883.
