The spacecraft has been orbiting Mars since March 2006 completing more than 40,000 orbits in that time.
The image shows a circular depression in a dark-toned unit associated with a field of cones to the northeast. The depression appears to expose layers especially on the sides or walls, which are overlain by dark sands.
Originally published by Cosmos as NASA imaging reveals layers in surface of Mars
Bill Condie
Bill Condie is a science journalist based in Adelaide, Australia.
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