This is 5 layer gum bichromate with watercolour paints.
I am (and I was that particular night) mesmerised with the light from the street lamp. Everything around it was red and the rest of the alley disappeared in darkness.
In my new living place I finally set things right and after few mishaps with mixing chemicals, new pigment paints, expired gum arabic etc. and 4 ruined prints I am creating again.