Kate Spence, an Egyptologist at the University of Cambridge who was not involved in the study, suspects that since the narrow tunnels can serve no practical purpose, they are almost certainly symbolic. "The metal pins look like symbolic door handles, and the shafts from the Queen's Chamber are oriented north-south, not east-west, so I strongly suspect that their function is symbolic and relates to the stars, not the sun," she says.
This is purely subjective of course, but when I looked at a close up image of those " door handles" the shorter one, seemed to depict a male head with a big beard, looking upward, while the other, the longer one seems to be a woman figure, looking at those gouges on the right wall.
Both handles are in perfect alignment with separate "star configurations" over their heads.
Also purely speculation, is that I noticed long ago that when there are certain marks, appearing like a tiny dark straight line, almost unnoticeable, above or sometimes below an ancient "picture" that by drawing or even imagining, a line right through the picture, using the tiny dark mark as a guide, a separate and hidden image often appears.
It`s as if the line draws your eye to an image that is unseen, or not noticed otherwise and it even occurred to me that this was the original idea, of Feng Shui!
" Historically, feng shui was widely used to orient buildings—often spiritually significant structures such as tombs, but also dwellings and other structures—in an auspicious manner."
Was this because they "lined up" with specific other things?
But as I said, this is purely subjective and is probably nothing but imagination, since there is no proof whats so ever, that any ancient people designed their "art" to be seen or understood, in this way.