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January 29, 2010

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I don't have experience with dunes, but from your descriptions, it looks like NASA's interpretation was a bit off. I see little reason why rocks or boulders would pile up on top of dunes or be uncovered in that pattern.

This must have made you cringe :)

Hi Alex - and thanks for the comment. Yes, it baffles me, too - it's not as if these particular rocks seem unusually large and could therefore be poking out above their cover of sand - they look as if they are literally lying on the surface. Of course, I know nothing of their actual size or the slope of the dunes (potentially steeper on Mars than here), and NASA are certainly right about the cleared-off "streets," but I would think that someone somewhere will be looking more closely!

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