Went back today 12:30 pm
Had to cup my hands over my eyes to peer thru to see the stained glass (the glass behind the bronze grid door was reflecting like a mirror; possibly time of day).
So; interestingly; 2 reflected images of the stained-glass "appear"; both upside down.
One projected on the slab of granite beneath the window; the other on the ceiling
The complete cipher was posted earlier as a 3-layer-overlay image
Another thread in Glp ( on Ancient Egypt); hints at where to start reading (in degrees); and orientation; clockwise vs anti
The message will contain astrological symbols; Roman numerals; greek
Found the "correct" st Michael (middle finger to index finger left hand; not the vulcan st michael holding shield in cemetery.
Also; like to share; a chorus of crickets is Nature's interferimeter