This image from the Mars Exploration Rover Opportunity's navigation camera was taken on the rover's 71st sol on the red planet. On the previous sol, the rover drove beside a sinuous trough in the plains of Meridiani Planum to get a closer look at its curious dimples. The rover then approached the pictured trough area referred to as "Anatolia." From a distance, the rocks here resemble those in the "Eagle Crater" outcrop. These rocks will be imaged in greater detail with the rover's cameras.
Image credit: NASA/JPL