Its just a 3D version of what you see.
If you’re on mobile, open the pic in landscape mode. Put your nose to the bottom of your phone, cross your eyes and slowly pull away from the picture. It often takes a handful of tries, but eventually you will see it.
Never had that not work for someone if they cared enough to keep trying it.
Yeah, there is a whole LOMA (Letter of Map Adjustment) process. However it’s super confusing, and I am 95% sure I will have to hire a land surveyor for 1-2k to get it done, due to no recent maps of the area.