Close-up of 'Wopmay'
A close-up look at the surface of a rock called "Wopmay," inside "Endurance Crater," shows crevices and spherical concretions. The view combines four frames taken by the microscopic imager on NASA's Mars Exploration Rover Opportunity during the rover's 259th martian day (Oct. 15, 2004). The area shown is about 6 centimeters (2.4 inches) across. This location on Wopmay was given the informal target name "Twin Otter."
Image Credit: NASA/JPL/Cornell/USGS
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