This image represents one of many monitoring sites at the South Pole residual cap (SPRC). Images are taken throughout the Martian year to document changes in carbon dioxide ice coverage.

This image shows a popular spot where one of the features resembles a smiley face that is approximately 500 meters across. If you smile at Mars, sometimes it smiles back.

ID: ESP_039115_0945
date: 30 November 2014
altitude: 249 km

https://uahirise.org/hipod/ESP_039115_0945
NASA/JPL-Caltech/University of Arizona
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