B HiRISE images show strange-looking Mars formations

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HiRISE images from NASA's Mars Reconnaissance Orbiter reveal unusual formations on Mars, including troughs and channels draining into depressions. Context Camera images provide additional clarity, showing features like impact craters and collapse depressions with concentric troughs. Some formations resemble glacial crevasses, despite the absence of glaciers on Mars. Others are identified as bedforms, formed by fluid flow over sand-like materials, aligning perpendicularly to canyon walls. These observations contribute to the ongoing exploration and understanding of Martian geology.
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Who's got some ideas?

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This image from NASA's Mars Reconnaissance Orbiter is a close-up of a trough, along with channels draining into the depression. Some HiRISE images show strange-looking formations. Sometimes it helps to look at Context Camera images to understand the circumstances of a scene -- like this cutout from CTX 033783_1509 -- which here shows an impact crater with a central peak, and a collapse depression with concentric troughs just north of that peak.

https://www.nasa.gov/image-feature/jpl/pia22348/formations-in-context-or-what-is-it
 

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the right ones remind me of glacial crevasses .. but no glaciers here

Definitely weird
 
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This ridges appear to be a classic example of bedforms. which result from fluid flow over sand or similar aggregates. Note how they tend to align perpendicular to 'walls' of the canyon in which they reside.
 
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