Scene of massive wreckage on Mars

It is that.
I think its a modern anfill with daily cover . (Its probably a Martin Holiday so they buttoned it up for the weekend.

Do Martians Have weekends?? I wonder where they go ?

That's a LANDFILL

Lots of stuff in this one which I would view as non-naturally-occurring but nothing which I could easily point to and say "this is a ####" or "that's a $$$$$". Looks almost as if the entire planet were just picked up and shaken...

I have no idea what youre seeing and where?

The strat section across the front is a rock layer

Are there sedimentary layers there ? Or does volcanic activity also produce a 'layer' effect ?

yep. sed layes from rocks that were in water, as well as ash layers and layers from meteorite hits. The layer, no matter the source of the clastic stuff inside, would be considered sedimentary