Theres a documentary you can find in full on youtube, it's called something along the lines of "the mystery of the pyramids". Its 2 hours long, in the second hour they just do a bunch of calculations with random numbers related to the dimensions of the pyramid. But for the first hour of it, they go over the line you see on the post above. I'm not sure if it exactly sheds any new light on the significance of the line if that's what you're looking for, but you'll probably find it interesting as they go over all the coincidences and whatnot.
Edit - pretty sure this is it https://youtu.be/2fS9ixfQ_no Like I said, it gets kinda "hokey" for lack of better term, but it's a fun watch anyway
Right on, thank you. I think this is just fascinating.
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