Enrico Castellani, one of the most acclaimed representatives of Italian post-war art, worked out his very own treatment of the canvas in his series "Superficie trapunte" from the 1960s. He fundamentally challenged traditional concepts of picture and composition and found a new way to overcome two-dimensionality. This work is a particularly fine example from the key workgroup that soon made for the artist's international breakthrough. By means of nails that push against the canvas from the back and lift the canvas, Castellani modulates the monochrome surface and creates rhythmical-serial effects and an interesting play of light and shade. Different from his "ZERO" colleague Günther Uecker the nails appear just indirectly. The visbible material and technical intrusion on the work is reduced to a minimum. By scarcest means Castellani visualizes his the central theme, the relationship of light and space.