Mars Orbiter Camera View of 'Victoria'
This image from the Mars Orbiter Camera aboard NASA's Mars Global Surveyor spacecraft shows an overview of "Victoria Crater" and a portion of the area NASA's Mars Exploration Rover Opportunity has covered to reach the enormous depression.
The crater is about 800 meters (half a mile) in diameter. North is up.
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Image Credit: NASA/JPL-Caltech/MSSS