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The image is horribly of scale and there are some key parts missing.

There is a connection between a area i couldnt place and a window.

Also excuse my horrible drawing lol

Edit: This is the part i didnt know where to place + half of it is missing. The window has ropes on it. Also continuing in the window you get to another window. It should be the one in mid but its hard to tell from the trailer

Im guessing its somewhere between a site and ct spawn but im not sure. Maybe someone else has an idea