And to think that it costs more than $100 million to just manufacture that thing.

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Here is my five minute stratal architecture. Looks like two packages of deltaic clinothems. The lower shows a classic thickening-upwards I drew a (schematic grain size curve on the right), indicating progradation of the depositional system. It also has some large-scale deformation, which is not unusual in deltaic settings because of gravitational failure along the steep slopes and episodic rapid sedimentation. Truncation of the contorted strata could have been formed by sub aerial erosion during a lake-level fall, or by wave-ravinement during the subsequent lake-level rise.

The two clinothems also show a progradational stacking pattern, with the upper distinctively in front of the lower. This could also be reflecting en echelon stacking of the deltaic lobes, with the thick sandy proximal parts preferentially filling the in the accommodation above the thinner, finer-grained parts of the older lobes.

The outcrop indicates that the lake level fluctuated, and delta lobes were able to prograde back out after lake level rise. The deformation indicates rapid deposition. There may also be a sediment-gravity flow system of subaqueous fans and channels outboard of the stacked delta lobes.

There are many terrestrial outcrops of ancient lacustrine deltas that show these same features and relationships. The Eocene Green River Formation of Wyoming and Utah comes to mind as good analogs.

Mattias Malmer has created a short Virtual Reality-type video from early surface images. Here is a tweet from him with the video.

Has there been any confirmation that the arm has been deployed and working?

This Is Mars

30 minutes uninterrupted on the surface of Mars in 4k UHD

I denoised, repaired, graded, stitched and composited all together in After Effects.

Very similar structures can be seen in the New Mexico desert. I am guessing that the wind swirls around in complex patterns and erodes some places more than others.
Notice the sand around the bottom. The New Mexico example of course has had rain water falling on it from above, leading to a different weathering and cracking.

I did not know MEDA was stowed inside those covers and had to be deployed.

I think the similar instrument on Curiosity was slightly damaged by flying debris during landing.

This Is Mars

This our versions of Mastcam-z panorama sol 4

And they deBayer quite nicely out of the box:

Looks like the cover might be in the closed position.

I was playing with the HiRISE DTM as part of a project I am working on and thought this viewshed of what Perseverance can see might be of interest. The areas in pink/purple are what what the Mastcam can see assuming it is 2 meters off the ground.