Had some trouble with the perspective there for a minute guess those are chimneys, not smokestacks and she is normal person sized.
I think they are far in the background, as she looks to be working on catwalks for working. At least thats my perspective.
I still don’t understand what is happening in this picture
If they were giant smokestacks further back, then they would be in the haze of the smog, like everything else in the background. There’s a similar vertical object visible in the top right corner, far back and obscured by the haze, but I think it’s a chimney just like those in the front.