Re: RE: Water Sign on Mars
Well....keep in mind that it's a wide-angle image, very low resolution--the whatever-it-is must be hundreds of kilometers long. This is no small plume, if that's what it is!
A theory: The "plume's" base seems to start at a rille, and snakes in a pattern similar to the rille. Notice another rille in the lower half of the image, and how it too has a thin line of clouds; only in this case, you can see a more definite relationship between the clouds and the rille. Maybe both "plumes" are actually ground fog in the rilles?
--Robert