Find how the rock arrived
Start with an apparently new Martian rock, then inspect the later uphill view that supported Opportunity's wheel-displacement explanation.
What to keep in mind
The dated pair is thirteen Earth days apart, not continuous footage. The later scene supports an inference about displacement; it does not show the instant of breakage.
Mark the change
In the paired camera product, identify the newly occupied patch and the features that remain recognizable around it. What does the gap between views leave unseen?
Follow the uphill clues
In the later scene, locate the wheel track and the two named rocks. Which observations support displacement from uphill, and which part remains reconstructed?
Separate colour and chemistry
Which differences are visible in the rock's pale margin and dark centre? Which mineralogical conclusions need the chemical measurements beyond this colour image?