During the period we have just covered, winter for Viking 2, the lander took its first pictures of frost on the surface. We don't see many pictures like this because most landers have been at lower latitudes. Phoenix is the obvious exception, but Viking 2 did it first. These links show 2 images - but from later in the mission, the second winter.
https://www.planetary.org/space-images/viking2_frost_stryk
https://www.nasa.gov/image-article/viking-lander-image-of-ice-mars/
#mars #viking2
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