It's a matter of geometry.
Photons strike atmospheric particles and are deflected. They strike him and are deflected. They strike the column and are deflected. I perceive them through the distortion and alignment of the lenses in my camera. I know their relative quantities creating the scene in front of me and nothing more. They're not conjuring the phantoms of vanished gods into shadow to menace explorers, irreverent trespassers on a formerly sacred domain.
It's only a matter of geometry.