Viking 2 at Utopia Planitia Date: 25 Sep 1977 The boulder-strewn field of red rocks reaches to the horizon nearly two miles from Viking 2 on Mars' Utopian Plain (Utopia Planitia).
The flag in the foreground at left is on the RTG (Radioisotope Thermoelectric Generator) wind screen.
Full caption is available here.
Credit: NASA/JPL
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