At 19:59:56 UTC, 17:30:43 local solar time, the Mastcam Left takes the traces impressed by a wheel of Curiosity itself on the Martian soil.
This time, however, also appear on the ground “cracks” (enlarged in the box to the right of the image) that incredibly resemble the cracks that form when the clay is wet on the surface and then dried quickly at room temperature. Certainly such cracks could not form in absolutely dry soil consisting of sand as fine as talcum powder!
HD processed image: https://image.ibb.co/eCwvWn/Curiosity_Sol2020.jpg
Original image: https://mars.jpl.nasa.gov/msl/multimedia/raw/?rawid=2020ML0106590020800191E01_DXXX&s=2020
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