Candidate landing site in Antoniadi Crater for future Mars missions.
Photo credit: NASA/JPL/University of Arizona
Notes: Unfortunately, the caption for this photo reads like a bad THEMIS caption; so I'll write my own brief caption for this image:
Antoniadi Crater, named after the Turkish-born French astronomer Eugène Michael Antoniadi (1870-1944), is an impact crater located in Syrtis Major Planum. Previous HiRISE photos have provided evidence that Antoniadi Crater once contained rivers and lakes. The sediments deposited by the water later hardened to the point where, when the sediments lying over the entire area were eroded away, the river beds remained due to the erosion-resistant materials that had cemented together, thus forming what is known as inverted relief. In other words, the former river beds are now raised ridges above the crater's floor.
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