This whole thread was prompted by Dfrank's interpretation of the image linked in the OP, correct?

I assume the feature he's referring to is the small teardrop-shaped area located top center, at the end of what appears to be a valley bottom. If that's correct, I have a couple questions.

Does anybody know what it looks like in real color, rather than this false-color image?

Is there any way to determine the scale of this feature? The rover cameras can make quite small objects look large. It seems to me that the feature could be as small as a fist or as big as a few meters across, but that's really a guess. Can we get a better estimate of its distance and size?

Has anyone determined an "official" explanation of this feature? I have seen similar things consisting of wind-blown sand in dune areas.

For the sake of argument, let's assume that there was some liquid water on the surface. Under the prevailing conditions, would it be just sitting there, or would there be some expectation of activity -- steam, mist, etc.?

I think the answers to these questions could explain NASA's lack of interest in the feature. Not that any of that would put a damper on anyone who's looking for conspiracies under every blueberry-encrusted rock.

Honestly, Dfrank, why would NASA not investigate possible surface water, if such a thing were even remotely possible? It would be a stunning discovery, and the investigators would give substantial parts of their bodies to make a finding like that!

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