THEMIS Image of the Day, May 26, 2016. This VIS image shows part of Boreum Cavus, at the interior end of Chasma Boreale. The layered polar ice is easily identified in the upper part of the image. Boreum Cavus is an arcuate region where the polar ice thins, revealing the rockier surface of Chasma Boreale.
More THEMIS Images of the Day by geological topic.