In 1967, Miró learned carborundum printmaking from Robert Dutrou. This technique, combined with etching and aquatint, allowed him to create prints that rivaled his paintings. Carborundum added texture, aquatint provided color, and etching outlined forms. The process involved applying a paste to the plate, creating a raised surface that absorbed ink. Miró produced over 70 prints using this method, which are now highly sought after for their expressive quality.