An Enlightened Wall?
Well, at least by the sun . . .

This photo was taken by an Asahi Pentax 6 X 7 medium format film camera with a Super Multi-Coated Takumar/6X7 1:4.5/75mm lens using Kodak Ektar 100 film, the negative scanned by an Epson Perfection V600 and digitally rendered with Photoshop.