“The Eastern Floor of Aram Chaos”
htmanelski, m o d
This image of Aram Chaos (3.112° N, 340.169° E), a heavily eroded crater east of Valles Marineris, was taken by HiRISE on September 30th, 2011. You can see a mesa surrounded by sand. Aram Chaos has been the subject of repeated HiRISE observations to understand dune field dynamics and the history of water on Mars – water from this region is believed to have flowed north billions of years ago and carved out the 2,000 kilometer long Ares Vallis channel system.
The width of this image is about 1 km.