Edited Mars Reconnaissance Orbiter image of a rocky region with a steep cliff with sand dunes in the basin. The website said this reminded NASA of waves on an ocean beating against the cliff. (They are not usually so poetic...)

Edited Mars Reconnaissance Orbiter image of colorful bedrock in a crater on Mars' northern plains. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of landforms in Coprates Montes.

Edited Mars Reconnaissance Orbiter image of the landing site of Opportunity (which landed on Mars in 2004). MIRB variant from NASA, further variantized by me.

Edited Mars Reconnaissance Orbiter image of layered deposits in Echus Chasma.

Edited Mars Reconnaissance Orbiter image of north polar dunes.

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

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

Edited Mars Reconnaissance Orbiter image of gullies and slopes being monitored for changes.

Edited Mars Reconnaissance Orbiter image of sand dunes on Mars as part of a monitoring campaign.

Edited Mars Reconnaissance Orbiter image of a channel, long desiccated, in Idaeus Fossae on Mars. PR version. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes in Chasma Boreale being monitored for changes.

Edited Mars Reconnaissance Orbiter image of a crater in the Arabia region of Mars.

Edited Mars Reconnaissance Orbiter image of a layered mesa in Coloe Fossae. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of "dune convoys in West Olympia Undae. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a dune field on a landslide in Ius Chasma.

Edited Mars Reconnaissance Orbiter image of the floor of part of eastern Aram Chaos. Color/processing variant.

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

Edited Mars Reconnaissance Orbiter image of colorful bedrock in a crater on Mars' northern plains.

Edited Mars Reconnaissance Orbiter image of rock falls (into a large fissure) in Cerberus Fossae on Mars. Cropped color/processing variant.

Edited Mars Reconnaissance Orbiter image of part of Mawrth Vallis. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes on Mars as part of a monitoring campaign. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of T-shaped sand dunes on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of fan material in southern Gale Crater (away from Curiosity).

Edited Mars Reconnaissance Orbiter image of layers in a crater rim in Lucus Planum.

Edited Mars Reconnaissance Orbiter image of exposed bedrock in the Koval'sky Impact Basin. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of pits and craters in the Idaeus region of Mars.

Edited Mars Reconnaissance Orbiter of a candidate landing site in Hadriacus Palus for the Mars 2020 mission (a rover very similar to Curiosity).

Edited Mars Reconnaissance Orbiter image of terrain in the south polar region of Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of "colorful" Hargraves Crater on Mars. The available RGB image looked kind of greenish to me and the processed variant looks bluish so I suppose that qualifies for "colorful"... Color variant.

Edited Mars Reconnaissance Orbiter image of a large volcano on Mars with a dark pit on its side. Color/processing variant.

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

Edited Mars Reconnaissance Orbiter image of a fissure in Cerberus Fossae. Color/processing variant.

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

Edited Mars Reconnaissance Orbiter image of a 216 meter crater in cracked terrain.

Edited Mars Reconnaissance Orbiter image of changes (from an earlier image) in sand dunes in Syrtis Major.

Edited Mars Reconnaissance Orbiter image of layered deposits in Echus Chasma. Color variant.

Edited Mars Reconnaissance Orbiter image of a boulder field in Huxley Crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a dune field in West Hellas Planitia on Mars.

Edited Mars Reconnaissance Orbiter image of cinder cones on Mars.

Edited Mars Reconnaissance Orbiter image of a "mysterious" bright streak in the layers near the Martian south pole.

Edited Mars Reconnaissance Orbiter image of craters and sand dunes on Mars.

Edited Mars Reconnaissance Orbiter image of a new (relatively speaking) crater on Mars inside Pasteur Crater. The blue indicates basaltic material. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of basaltic sand in a canyon on Mars. Color variant.

Edited Mars Reconnaissance Orbiter image of Iani Chaos. This is the context view although it's hard to tell...

Edited Mars Reconnaissance Orbiter image of flow ridges in brain terrain (what a wonderful name for a type of terrain!) in Claritas Fossae.

Edited Mars Reconnaissance Orbiter image of Iani Chaos. This is the context view although it's hard to tell... Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes near the rim of the Hellas Impact Basin, which is one of the largest craters in the solar system.

Edited Mars Reconnaissance Orbiter image of layered rocks and sinuous ridges in the north Hellas Region of Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes named Kolhar. Red channel.