This area near the Southern ice cap has an interesting formation: it looks slightly rectangular. Perhaps it’s a large section of glacial ice. A study of this formation may reveal new knowledge about erosion, and ice formation on Mars.
This area is seasonally covered with a layer of ice. Promethei Planum lies at approximately 76 degrees South and 105 degrees East.
This caption is based on the original science rationale.
Written by: HiRISE Science Team (11 May 2011)
More info and image formats at http://hirise.lpl.arizona.edu/ESP_021915_1005
Image: NASA/JPL/University of Arizona