adywan said:

The scorch mark behind the railings has been added in that clip. It is visible when viewed on a larger screen

Ah, that's good to know.

I guess that thing concerning the 'squeezed' chasm must be some kind of 'optical illusion' after all, but it still seems that way to me when I look at that 1st comparison shot of the chasm I posted above. When I 'flip' the original version upside down, it seems fine, yet your 'flipped' one underneath seems differently shaped somehow. Strange.

Anyway, thanks for those answers, and I look forward to seeing if anything happens with the rest of my points eventually.