This observation features an amazing variety of surface terrain and araneiform structures that we dub “spiders.”
The lava appears to overlay sand and sedimentary deposits, so finer scale This image shows a potential outflow channel near Huo Hsing Vallis into an old crater.
A dominant driver of surface processes on Mars today is aeolian (wind) activity. In many cases, sediment from this activity is trapped in low-lying areas, such as craters.
It has been known since the 1970s when the Viking orbiters took pictures of Mars that there are large (i.e., several kilometers-thick) mounds of light-toned deposits within the central portion of Valles Marineris.
Sometimes, we acquire an image for the simple reason of getting either more coverage of an area, and/or to complete a mosaic of a particular spot.
These lovely linear dunes at Meroe Patera identified in Context Camera images that have developed in a sand…
The distinctively fluted surface and elongated hills in this image in Medusae Fossae are caused by wind erosion…
Billions of years ago, a river flowed across this scene in Mawrth Vallis. Like on Earth, these river beds can get filled up with rocks that are cemented together.
Gully and defrosting activity have been visible here along the edge of a dune field, along with blocks of frost.