It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
originally posted by: LonnyZone
OK so the sand is blue on Mars, That's interesting!
originally posted by: TheAlleghenyGentleman
One puzzling question is why the dunes are dark compared with the relative bright layered material contained within the crater. The probable answer is that the source of the dark sand is not local to this crater; rather, this topographic depression has acted as a sand trap."
originally posted by: LonnyZone
I guess its not water then...
More Amazing Mars Photos - Courtesy of NASA