NASA’s Perseverance rover is busy drilling and collecting rock samples right now, while the HiRISE camera is still capturing breathtaking pictures of Mars. This set of images appear to be swarms of ants, but is actually dry ice-covered escape vents where gas exited to the surface.
What you’re looking at are the weak spots where gas sublimating from the bottom of the seasonal ice layer escape. They appear to be around craters, where the surface was broken and dotted by an impact. There are fans of surface material deposited on top of the seasonal ice layer and the escape vents are what appear to be ants.
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This is a place where fans emerge relatively late in the Martian spring from polygonal cracks owing to the process of sublimation. Good lighting may make it possible to catch an eruption of material that will darken the surrounding area before fading over time and moved about by the wind. This scene is at the Martian South Pole,” said the researchers.
