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Large File.
NASA Link.

NASA presented the image upside down we had to right it, is why it is an odd shape.

https://i.postimg.cc/nc6P6bzf/Cliplock-Manufacture.jpg

Cliplock roofing is produced in massive factories that have huge rolling presses, there is no sign anything like that has ever existed on Mars.

https://i.postimg.cc/j254j3yS/Op-115-Sleeper.jpg

Nor is the roofing iron the only evidence of travel thru the space / time continuum, the above shot from Opportunity Sol 115 shows a Western Australian hardwood railway sleeper, despite the Opportunity Rover ran over this particular one without taking a closer look, which makes a mockery of the entire mission!

As for time travel, going at ten mph you will arrive at yr ten mile destination one hour after you left, if you speed up to 20 mph you will be there a half hour after you left, at 40 mph you will be there in a quarter hour .. if you go fast enough say at superluminal - faster than the speed of light - velocity, you will arrive at yr destination before you left.

We say extra planetary space travellers seeded the Earth, Venus and Mars with various life forms, as well they scattered stone weapons over those worlds presumably to foster murder among the inhabitants .. time travel is the only thing that will make it work, that they can go back and forth in time.

Considering ClipLock iron roofing did not appear until the 1960's, postulate the time traveling "Galactics" obtained the roofing iron of C Sol 1035 and the railway sleepers thru normal Earthly channels, then went back billions of yrs and put them on Mars.

Curiosity Rover landed in Gale Crater which is three miles deep and nearly one hundred mi across, thus the impact that produced the crater displaced some 7500 cubic miles of volcanic ash, to expose the roofing iron at the outer edge of the destruction zone which is the flat area in background.

The population that used the steel roofing predated the inundation that produced the mudstone, while the pundits assure us the massive volcanic eruptions that blanketed much of Mars' surface with ash occurred up to 3.7 billion yrs ago. Link.