NASA - National Aeronautics and Space Administration

This approximately true-color view of Marquette Island comes from combining three exposures that Opportunity's panoramic camera took through different filters during the rover's 2,117th Martian day, ...

Dunes of sand-sized materials have been trapped on the floors of many Martian craters. This is one example, from a crater in Noachis Terra, west of the giant Hellas impact basin.

This combination of images helped researchers analyze the youngest flood lava on Mars, which is in Athabasca Valles, in the Elysium Planitia region of equatorial Mars.