关于这张图
This VIS image shows depressions near the south polar cap. All surface ice in this region has been removed by the relative warmth of summer, revealing subtle features of the surface. Orbit Number: 59463 Latitude: -79.4883 Longitude: 266.91 Instrument: VIS Captured: 2015-05-10 21:45 http://photojournal.jpl.nasa.gov/catalog/PIA19720
