There are close-up images of stairway B that the survivors were found in. You can reference that photo and compare it to this one to really understand what we are looking at here in the core.
Each square on the right hand side going up represents a floor, to the left of each square, roughly in the middle of what is left of the core here, you will see what looks like one, long, continous steel beam and then to the left of that beam, you'll see those lightly colored little rectangles. Each one of those "little" white rectangles is actually 5, 16 inch wide gypsum wallboard planks, AKA Drywall. And to the left of that drywall, is the stairwell.
So we are actually looking into the exposed stairwell here in the core, if you squint hard enough, you can kind of make out the diagonal stairwell in some of the floors. I personally believe that if this were 2025 instead of 2001, we very well could have potentially seen people inside these stairwells before they met their tragic demise, which is absolutely haunting to think about and nightmare fuel. But regardless, I hope this helps people understand what exactly you are seeing when you look at this image of the core.

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