Edited Mars Reconnaissance Orbiter image of layers in the wall of Tinto Vallis.

Edited Mars Reconnaissance Orbiter image of a fractured crater in the Ladon Valles Basin. Color variant.

Edited Mars Reconnaissance Orbiter image of an ice-filled crater in Mars' north polar region that may be losing or gaining ice. It appears to be losing ice given the trailing material downwind, but that's just my guess...

Edited Mars Reconnaissance Orbiter image of sand dunes with furrows on Mars. Geometric variant (for fun - besides the seams are pretty close...)

Edited Mars Reconnaissance Orbiter image of Gale Crater and the Curiosity Rover. Red channel image (meaning red objects tend to be bright). Curiosity is in the yellow circle near the center-right of the image.

Edited Mars Reconnaissance Orbiter image of transverse aeolian ridges in Scandia Cavi.

Edited Mars Reconnaissance Orbiter image (from its Flickr photostream) of very rugged terrain.

Edited Mars Reconnaissance Orbiter image of slope features on the wall of Newton Crater on Mars.

Edited Mars Reconnaissance Orbiter image of pretty blue (at least in the released images from NASA as well as how I processed them) sand dunes on top of ridges on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a dune field in west Endeavour Crater, near where Opportunity is currently operating.

Edited Mars Reconnaissance Orbiter image of a crater on Mars whose slopes are being monitored (for land slides and the like).

Edited Mars Reconnaissance Orbiter image of frost and patterns on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of slopes facing the south in Coprates Chasma.

Edited Mars Reconnaissance Orbiter image of a chaotic region on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a pitted cone in Aurorae Chaos with lots of complex lines.

Edited Mars Reconnaissance Orbiter image of sand dunes with gullies and alcoves.

Edited Mars Reconnaissance Orbiter image of the slopes of a crater.

Edited Mars Reconnaissance Orbiter image of sand dunes on Mars. Color variant.

Edited Mars Reconnaissance Orbiter image of slopes being monitored for changes. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of Iani Chaos.

Edited Mars Reconnaissance Orbiter PR image of the terrain in Noachis Terra.

Edited Mars Reconnaissance Orbiter image of layers and sand in Danielson Crater. Cropped section to show layers.

Edited Mars Reconnaissance Orbiter image of the residual cap on the south pole of Mars.

Edited Mars Reconnaissance Orbiter image of a recent "candidate" (meaning, "never mind - it's real") impact crater on Mars. Annotated to show location of the new crater.

Edited Mars Reconnaissance Orbiter image of a pit near the Elysium Mons volcano.

Edited Mars Reconnaissance Orbiter image of a stratigraphic boundary in Meridiani Planum. Red channel version.

Edited MRO image of a fan-shaped landform on Mars.

Edited Mars Reconnaissance Orbiter image of a steep scarp in Arnus Vallis on Mars.

Edited Mars Reconnaissance Orbiter image of a pit in Noctis Labyrinthus.

Edited Mars Reconnaissance Orbiter image of a two kilometer crater inside of Pasteur Crater. The blue is from basaltic material and if you look carefully, you can see rings, as if a pond or lake was evaporating. Color variant.

Edited Mars Reconnaissance Orbiter image of the formation of a pedestal crater on Mars. Pedestal craters are analogous to mesas - harder ejecta near the crater stays around after the softer material has eroded away (probably via wind action).

Edited Mars Reconnaissance Orbiter image of sand dunes in Nili Patera.

Edited Mar Reconnaissance Orbiter image of layers in a polar region on Mars. Color/processing variant.

Edited Mar Reconnaissance Orbiter image of layers in a polar region on Mars.

Edited Mars Reconnaissance Orbiter image of part of the Syrtis Major region of Mars.

Edited Mars Reconnaissance Orbiter image of secondary impact craters and their shapes on Mars. Color variant.

Edited Mars Reconnaissance Orbiter image of part of the summit of Argyre Mons.

Edited Mars Reconnaissance Orbiter image of dust devil tracks on the surface of Mars over a raised section of the landscape in Sisyphi Planum.

Edited Mars Reconnaissance Orbiter image of polar sand dunes with blotchy surfaces.

Edited Mars Reconnaissance Orbiter image of a hill or mountain on Elysium Mons.

Edited Mars Reconnaissance Orbiter image of defrosting teardrop-shaped dunes.

Edited Mars Reconnaissance Orbiter image of a large pit in the surface of Mars (you can just make out the bottom) in Hebrus Valles.

Edited Mars Reconnaissance Orbiter image of rocky mesas in the Nilosyrtis Mensae region.

Edited Mars Reconnaissance Orbiter image of gullies in a crater in the southern hemisphere of Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of possible chloride salts in Terra Sabaea.

Edited Mars Reconnaissance Orbiter image of dune gullies in Kaiser Crater. Color variant.

Edited Mars Reconnaissance Orbiter image of part of the escarpment of Chasma Boreale near the Martian north pole.

Edited Mars Reconnaissance Orbiter image of a small part of the very large Hellas Basin on southern Mars. Processing variant.

Edited Mars Reconnaissance Orbiter image of a chaotic region on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of rocky outcroppings in Mawrth Vallis on Mars.