This image from NASA's Mars Reconnaissance Orbiter shows one of these exotic locales at the South Pole. The polar cap is made from carbon dioxide (dry ice). The circular pits are holes in this dry ice layer that expand by a few meters each Martian year.
Scalloped Terrain Led to Finding of Buried Ice on Mars
This vertically exaggerated view shows scalloped depressions in Mars' Utopia Planitia region, prompting the use of ground-penetrating radar aboard NASA's Mars Reconnaissance Orbiter to check for underground ice.
Exposed Fractured Bedrock in the Central Pit of a Crater
This image from NASA's Mars Reconnaissance Orbiter shows the central pit feature of an approximately 20-km diameter complex crater in located just north of the Valles Marineris. A partial ring of light-toned, massive and fractured bedrock is observed.
This area of Amazonis Planitia to the west of the large volcano Olympus Mons was once flooded with lava as seen by NASA's Mars Reconnaissance Orbiter. A huge eruption flowed out across the relatively flat landscape.
On Nov. 1, 2016, the High Resolution Imaging Science ExperNASA's Mars Reconnaissance Orbiter observed the impact site of Europe's Schiaparelli test lander, gaining the first color view of the site since the lander's Oct. 19, 2016, arrival.
Martian 'Spiders' in Sharper Look, Thanks to Volunteers
This image from NASA's Mars Reconnaissance Orbiter shows spidery channels eroded into Martian ground. This terrain type, called spiders or 'araneiform' (from the Latin word for spiders), appears in some areas of far-southern Mars.
This image from NASA's Mars Reconnaissance Orbiter shows some beautiful lava flows in Amazonis Planitia. Lava isn't moving around on Mars today, but it certainly once did, and images like this one are evidence of that.
The Tharsis region of Mars is covered in vast lava flows, many with channels, as seen by NASA's Mars Reconnaissance Orbiter. Some channels, however, resemble features that may have been formed by water.
Curiosity Destinations for Second Extended Mission
This map shows the route driven by NASA's Curiosity Mars rover from the location where it landed in August 2012 to its location in September 2016 at 'Murray Buttes', and the path planned for reaching destination at lower Mount Sharp.
Curiosity's First 16 Rock or Soil Sampling Sites on Mars
This graphic maps the first 16 sites where NASA's Curiosity Mars rover collected rock or soil samples for analysis by laboratory instruments inside the vehicle. It also presents images of the drilled holes where 14 rock-powder samples were acquired.