This image from NASA's Mars Exploration Rover Opportunity's front hazard-avoidance camera shows the rover's view of the floor of 'Endurance Crater.' The image was taken from just inside the rim of the crater on June 9, 2004.

This image from the Mars Exploration Rover Opportunity's front hazard-avoidance camera shows the rover's view of the floor of "Endurance Crater." The image was taken from just inside the rim of the crater during Opportunity's 134th martian day, or sol, on June 9, 2004.

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