So these chemicals are used after the print is made and create this beautiful colour Palette? I am not really seeing a solarization/sabattier effect though
I am seeing a second image in the dark area of the print, which looks reversed.
The short answer is yes....these chemicals are applied after the print is made. There is no other image in the dark area. The process is easier explained at the bottom of the link that I sent you. (Christina Anderson)