Cavo rilievi is an Italian term that refers to a sculptural technique that is popularly known as intaglio or relief sculpture. It is characterized by carving shallow, incised lines and patterns on a flat surface to create a three-dimensional effect. There are many synonyms for cavo rilievi, including bas-relief, sunken relief, incised relief, and indented relief. Each of these terms essentially refers to the same practice of carving to create depth and dimension. Some more technical alternative terms are "anaglyph," "diagonal burr" or "basso-relievo." Regardless of the term used, cavo rilievi is a method that has been used in art for centuries, from ancient Greek and Roman sculptures to contemporary design.