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Originally posted by rocksolidbrain
But its possible for some crystalline rocks to break in straight lines or erode that way.
Originally posted by zorgon
So you don't think it possible that these 'monoliths' were already standing on the side of a hill from thousands of years ago and then landslides buried them?
I mean... you absolutely positive they are pieces broken off the hill that landed straight up like that?
I mean you are an 'expert' on Martian rock in images, yes?