This full-circle scene combines 817 images taken by the
panoramic camera (Pancam) on NASA’s Mars Exploration Rover
Opportunity. It shows the terrain that surrounded the rover
while it was stationary for four months of work during its most
recent Martian winter. Opportunity’s Pancam took the component
images between the 2,811th Martian day, or sol, of the rover’s
Mars surface mission (Dec. 21, 2011) and Sol 2,947 (May 8,
2012). Opportunity spent those months on a northward sloped
outcrop, “Greeley Haven,” which angled the rover’s solar panels
toward the sun low in the northern sky during southern
hemisphere winter. The outcrop’s informal name is a tribute to
Ronald Greeley (1939-2011), who was a member of the mission team
and who taught generations of planetary scientists at Arizona
State University, Tempe. The site is near the northern tip of
the “Cape York” segment of the western rim of Endeavour Crater.
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