Edited Mars Reconnaissance Orbiter image of a large volcano on Mars with a dark pit on its side. Cropped version.

Edited Mars Reconnaissance Orbiter image of a mound in Juventae Chasma on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of hills in the northern plains of Mars. Color/processing variant.

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

Edited Mars Reconnaissance Orbiter image of a region west of Iani Chaos.

Edited Mars Reconnaissance Orbiter image of degrading craters (one wonders what they did) in Noachis Terra on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of activity in a crater (most likely due to wind) north of Antoniadi Crater on Mars.

Edited Mars Reconnaissance Orbiter image of rocky deposits on the floor of Briault Crater on Mars.

Edited Mars Reconnaissance Orbiter image of deposits in a channel in Nilosyrtis.

Edited Mars Reconnaissance Orbiter image of part of Meridiani Planum.

Edited Mars Reconnaissance Orbiter image of a strange hill with lines on Mars. Processing variant.

Edited Mars Reconnaissance Orbiter image of bands of colors in bedrock in Terra Sabaea.

Edited Mars Reconnaissance Orbiter image of Terra Sirenum.

Edited Mars Reconnaissance Orbiter image of a slope on Mars being monitored for changed.

Edited Mars Reconnaissance Orbiter image of north east Gale Crater.

Edited Mars Reconnaissance Orbiter image of "dune convoys in West Olympia Undae.

Edited Mars Reconnaissance Orbiter image of gullies on the edge of Gasa Crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a sandy region of Herschel Crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of ice blocks that fell during an avalanche between 2006 and 2012. Grayscale version from NASA that shows better detail.

Edited Mars Reconnaissance Orbiter image of part of Mawrth Vallis.

Edited Mars Reconnaissance Orbiter image of a candidate recent impact crate on Mars. Color/processing variant - it is a lot easier to see the crater in the variant...

Edited Mars Reconnaissance Oribiter image of a scene from a large ("massive") pit in Hydrae Chasma.

Edited Mars Reconnaissance Orbiter image of a slope being monitored for changes. Color variant.

Edited Mars Reconnaissance Orbiter image of bands of colors in bedrock in Terra Sabaea. Color/processing variant.

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

Edited Mars Reconnaissance Orbiter image of terrain in the Terra Sirenum region of Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a collapsed channel margin (edge).

Edited Mars Reconnaissance Orbiter image of slope streaks and dust from a crater near by on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of Iani Chaos.

Edited Mars Reconnaissance Orbiter image of a fissure in Cerberus Fossae.

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

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

Edited Mars Reconnaissance Orbiter image of part of the landscape in Arabia Terra.

Edited Mars Reconnaissance Orbiter PR image (from its Flickr photostream) of hills and mesas on a flat plain.

Edited Mars Reconnaissance Orbiter image of deposits of material in Savich Crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter PR image (from its Flickr photostream) of material from a crater that was blown out by the wind.

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"...

Edited Mars Reconnaissance Orbiter image of a dunefield in a north polar crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes on the floor of Jeans Crater on Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes in Richardson Crater.

Edited Mars Reconnaissance Orbiter image of part of Noctis Labyrinthus. Inverted grayscale variant.

Edited Mars Reconnaissance Orbiter PR image (from its Flickr photostream) of a mesa on Mars.

Edited Mars Reconnaissance Orbiter image of dark sand dunes in Lyot Crater.

Edited Mars Reconnaissance Orbiter image of bright fans on dark dunes. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a textured-looking Martian surface.

Edited Mars Reconnaissance Orbiter image of ridges and troughs in a crater in Terra Cimmeria.

Edited Mars Reconnaissance Orbiter image of pits in Amazonis Planitia. Processing variant.

Edited Mars Reconnaissance Orbiter image of a dunefield in a north polar crater on Mars.

Edited Mars Reconnaissance Orbiter image of the inlet to Jezero Crater (the location of the Perseverance rover, which is not visible in the image). IRB (where I is infrared) image.

Edited Mars Reconnaissance Orbiter image of blue sand dunes (but only with the proper filters) in Lyot Crater. RGB shows dark sand dunes but IRB (infrared) shows a pretty blue...