Superficie verde 

"Superficie verde" (Green Surface) is a minimalist work by Italian artist Enrico Castellani. The work features a flat, monochromatic turquoise canvas, with the surface subtly undulating, creating a series of shallow indentations and protrusions. The piece's textured surface emphasizes the materiality of the canvas and invites the viewer to experience the artwork tactilely, exploring the play between light and shadow created by the subtle undulations. Castellani's work, classified as "Arte Povera", focused on manipulating and altering materials like canvas and metal, to explore the limits of painting and sculpture.