THEMIS: Swiss-cheese terrain on south polar cap

Textures new and old on polar cap (THEMIS_IOTD_20161004)THEMIS Image of the Day, October 4, 2016. This VIS image of the South Polar cap shows several different surface textures. It appears that the circular depressions (which look like swiss cheese) alter with time, appearing to lose the circular shape as the intervening walls of ice are removed.

More THEMIS Images of the Day by geological topic.

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