NASA's Mars Exploration Rover Opportunity used its rock abrasion tool on a rock informally named 'Gagarin,' leaving a circular mark. At the end of the rover's arm, the tool turret is positioned with the rock abrasion tool pointing upward.
This panoramic image of the 3.1 millimeter-deep (just over one-tenth of an inch) hole ground by NASA's Mars Exploration Rover Opportunity's rock abrasion tool in the target called 'Mojo 2' on 'Flatrock' was taken on the 44th martian day.
This microscopic image of 'Flatrock,' taken on NASA's Mars Exploration Rover Opportunity's 43rd sol on Mars, is representative of the science team's goal at the rock outcrop under investigation at Meridiani Planum.
The red marks in this image, taken by NASA's Mars Exploration Rover Opportunity's panoramic camera, indicate holes made by the rover's rock abrasion tool, located on its instrument deployment device, or 'arm.'