This image is of the upper part of Athabasca Valles, a very young flood channel on Mars that might have been carved by a flood of lava instead of a flood of water.
Detecting Olivine near Noachis Terra
This observation shows the bedrock on the floor of a crater near Noachis Terra. This crater is unique because it has been very well characterized as being olivine rich.
Among the Yardangs
Is the sinuous ridge here a “fluvial-ridge,” i.e., an inversion of a fluvial sediment deposit? It is important…
Those Gypsum Dunes
This image suggestion outlines a contact between gypsum-rich dunes in Olympia Undae and flat-lying layers of the basal…
Inverted Ridges in the Eridania Basin
This closeup of a HiRISE image covers a region in the Eridania Basin that shows interesting inverted ridges (white arrows).
Crater Slopes: The Power of a Repeat Image
Why does HiRISE take so many repeat images of the same area? Repeat coverage actually serves a special…
Layering West of Arabia Terra
This image is based on a request to retarget a site to create a stereo pair. Adjacent images…
Possible Impact Melt in Terra Sabaea
Nighttime and daytime infrared images from THEMIS suggest a consolidated deposit in the floor of this ancient crater in Terra Sabaea, potentially with some bedrock exposure.
A Rising Ridge
This obsevation focuses a ridge that is standing above the old lava surface of the floor of Echua Chasma.
Fans and Polygons
This is a place where fans emerge relatively late in the Martian spring from polygonal cracks owing to the process of sublimation.