Edited Mars Reconnaissance Orbiter image of slopes being monitored for changes. Note the strange, folded terrain near the center of the image.

Edited European Space Agency visualization of the geology of the Oxia Planum candidate landing site for ExoMars. Cropped and color variant.

Edited Mars Reconnaissance Orbiter image of a recent impact crater. Cropped, color variant.

Edited Mars Reconnaissance Orbiter image of a large-looking, dark sand dune sitting on top of relatively sand-free-looking terrain on Mars.

Edited Mars Reconnaissance Orbiter</b image of barchan dunes in the Martian north polar erg extending to the south.

Edited Mars Reconnaissance Orbiter image of a crater near Dorsa Argenta with lots of dark blotches.

Edited Mars Reconnaissance Orbiter image of a recent impact crater. Color variant.

Edited Mars Reconnaissance Orbiter image of irregular features in Nereidum Montes.

Edited Mars Reconnaissance Orbiter image of Gale Crater with Curiosity visible within the image. The region of the original image where Curiosity is visible with annotation to show where she is..

This subimage, about 400 meters across, shows the Mars Exploration Rover Opportunity (circled at lower left). The image was taken during the afternoon of Opportunity's 1783rd sol (Mars day) on the Red Planet. Opportunity had driven 130 m on the previous sol; wheel tracks are visible crossing dark ripples to the upper right of the rover. The ripples, which trend mostly north-south in this area, can be easily crossed by the rover unless they are very large (such as those right of center). The availability of HiRISE images of the terrain that Opportunity is crossing allow traverses to be planned in detail, avoiding potential hazards and targeting features of interest (such as the small craters below and left of center). HiRISE images are routinely used by the Opportunity operations team for these purposes, and to plan the route to distant Endeavour Crater, the longterm goal of Opportunity's mission, about 17 km to the southeast.

This image from the Mars Reconnaissance Orbiter shows a dark zone that could have been produced by multiple impacts in one location. In this example, the multiple impacts form an irregular patch, where dark material has been excavated, and is being redistributed by local winds. The darker, perhaps volcanic, material on Mars is often covered by brighter dust that settles out of the atmosphere. The darker wind streaks demonstrate the effectiveness of winds on Mars. ASU-IPF-3018

Edited Mars Reconnaissance Orbiter image of ridges in Thaumasia Planum.

Edited Mars Reconnaissance Orbiter image of sand dunes in Nili Patera on Mars. Color/processing variant.

Acquired on April 1, 2018, this image from NASA’s Mars Reconnaissance Orbiter shows Aram Chaos, a 280 kilometer-diameter ancient impact crater that lies within the Southern Highlands of Mars. Uplifted blocks of light-toned layers, composed largely of the ironoxide hematite and water-altered silicates, indicate that this crater once held a lake.

Edited Mars Reconnaissance Orbiter image of a recent (as in sometime in the last ten years) crater with a dark slope streak headed away from it, caused after the strike. An older avalanche can be seen to the left of the slope streak.

Edited Mars Reconnaissance Orbiter image of "pristine" dust deposits ("pristine" as "untouched," not "clean" or my desk would be considered "pristine") in Syria Planum on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a large crack in the ground east of Olympus Mons.

Edited Mars Reconnaissance Orbiter image of a mound in Solis Planum on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of raised, circular features in Tantalus Fossae on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of the floor of Kaiser Crater. Color variant.

Edited Mars Reconnaissance Orbiter image of a crater on Mars that looks like a giant eye (perhaps Sauron's eye) staring back... Color variant.

Edited Mars Reconnaissance Orbiter image of a dune field in Bonestell Crater. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of an avalanche from the edge of Mars' north polar ice cap, dropping dust and material onto the surface below - you can see the dust blow up by the avalanche in the upper-left corner of the image. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of mesas and layered hills.

Edited Mars Reconnaissance Orbiter image of the west flank of Chasma Boreale with barchan and linear sand dunes.

Edited Mars Reconnaissance Orbiter image of Curiosity, stationary on the slopes of Mount Sharp.

Edited Mars Reconnaissance Orbiter image of light-colored (which appear white in some conditions) rocky formations on the bottom of Pollack Crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of Swiss Cheese Terrain in the Martian South Polar Region. Inverted grayscale variant.

A false-color view of sand dunes and dust devil trails inside a crater in the Terra Cimmeria region of Mars. The ripples are a few meters across.

Sent by: Mars Reconnaissance Orbiter | From: Mars | Released: Jan. 3, 2008 | Image credit: NASA/JPL/UA

Edited Mars Reconnaissance Orbiter</b image of sand dunes in a crater near Toro Crater.

Edited Mars Reconnaissance Orbiter image of the landing site of Opportunity (which landed on Mars in 2004).

Edited Mars Reconnaissance Orbiter visualization of an impact crater on Mars where glass was detected. The bright green areas in the image are glass.

Edited Mars Reconnaissance Orbiter image of a crater whose slopes are being monitored (probably for formation of streaks).CMYK variant - I split the original into red, green, and blue channels and recombined into a CMYK image (in red, green, blue, red order).

Edited MRO image of active dune gullies in the high latitudes with lots of dust devil tracks all over the place. Processing variant.

Edited Mars Reconnaissance Orbiter image of a possible landing site for ESA's ExoMars, in Mawrth Vallis

Edited Mars Reconnaissance Orbiter</b image of "sustained" bright patches in the Martian north polar region. Color variant.

Edited Mars Reconnaissance Orbiter image of slope streaks on the side of a crater.

Edited Mars Reconnaissance Orbiter</b image of dark-colored sand dunes in Becquerel Crater. Color variant.

Edited Mars Reconnaissance Orbiter image of reentrant valleys (I'm not entirely sure what is meant by that) near Kasei Valles.

Edited Mars Reconnaissance Orbiter image of the interaction between ice and sand dunes in Olympia Undae.

Edited Mars Reconnaissance Orbiter image of mountains and sand dunes on Mars. Processing variant.

Edited Mars Reconnaissance Orbiter image of dunes and sand in rocky terrain.

Edited Mars Reconnaissance Orbiter image of Gale Crater with Curiosity visible within the image.

Edited Mars Reconnaissance Orbiter image of snowy (probably carbon dioxide snow) sand dunes.

Edited Mars Reconnaissance Orbiter image of Tyrrhena Terra.

Edited Mars Reconnaissance Orbiter image of various colors in Hellas Planitia.

Edited Mars Reconnaissance Orbiter image of a mound in Solis Planum on Mars.

Edited Mars Reconnaissance Orbiter image of old lava flows in Athabasca Valles on Mars.

Edited Mars Reconnaissance Orbiter image of Curiosity (only a few pixels in size from MRO's perspective) in Gale Crater as she moved to a new location.

This image shows a small shield volcano covering Noctis Fossae in the eastern Tharsis region of Mars. The Tharsis region is located on the Martian equator and contains some of the solar system