This image called the "McMurdo" panorama, comes from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Spirit. From April through October Spirit stayed on a small hill known as "Low Ridge.
The north polar ice cap of Mars, presented as a mosaic of 57 separate images from the High Resolution Stereo Camera on ESA’s Mars Express. The ice cap spans approximately 1000 km and is seen here in polar stereographic projection.
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