Strange Box on Google Mars

I was perusing on Google Mars, the Mer Opportunity Rover, Paysons Panorama, when my eyes caught an odd rather unnatural looking rock amidst the field of other Rocks, I do not know what to make of it,... it just doesn't look like any rock I have ever seen for sure. I don't easily make the leap into space aliens, or the like but this just seemed so out of place and does look somewhat engineered. Go to Google Mars and take a look for yourself and see what you think.

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