A new image from Mars introduces a structure that looks like a "bear face". If we zoom the image, we can see that the "Bear's nose" is the hill, and there is a "V" shaped scar. And there is a circle-shaped crack around that structure. Maybe there is some kind of gas bubble at that point.
Carbon dioxide ice is unstable, and if the temperature in gas closure starts warming it turns to gas very soon. There is only a small temperature mirror, where liquid carbon dioxide exists. When that gas started to erupt.
It formed the "bear's nose". Then the landscape fell. Circle-looking structure around the "bear's nose" formed when the landscape around that bubble fell. That means the Bear's face is a geological monument.
https://scitechdaily.com/nasas-hirise-captures-a-bears-face-on-mars-what-is-it-really/
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