An Ancient Lake in Melas Chasma?
HIGH WATER MARK
Seen close up, the debris fan at the west end of the closed basin shows a complex history of deposition and erosion. Beach sediments may lie where the basin meets the southern wall of Melas (bottom). Such deposits could preserve traces of former microbial life - if Mars had any. Click on the image to download a 834KB high-resolution version.
NASA/JPL/Arizona State UniversityDownload Original