If you look at the original photo that the group took in zoom, you will also see this octagonal shape.
The photo is stored on my computer. The original photo appears as the second photo.
I didn't modify anything, I just applied color and sharpened the photo, that's all. The octagonal shape appears on the original, so it's not due to my filters.
It's either a man-made device, an extraterrestrial device, or a hoax.
It is impossible to answer this question; I do not believe in the avalanche theory or the theory of a tree falling on the aunt