Last updated on April 16, 2014 at 17:34 EDT
Rippled Channel
164 of 3807

Rippled Channel

September 18, 2013
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a narrow channel on the upper east flank of the martian volcano, Hadriaca Patera. Because it is located on a volcano, most likely this channel was formed by lava, perhaps as a lava tube at which the thin roof later collapsed. Large ripples of windblown sediment now occur on the channel floor; their crests are generally perpendicular to the channel walls, suggesting that winds blow up and down through this channel. MGS MOC Release No. MOC2-1589, 18 September 2006

Credits: NASA/JPL/Malin Space Science Systems