Relief carving is a type of sculpting in which figures are carved into a flat surface, creating a three-dimensional effect. The two main techniques used in relief carving are CAMEO and glyph. CAMEO is a technique in which the artist carves a figure into a background of a different color, creating a contrast between the two. Glyph is a technique in which the artist carves symbols or figures into a flat surface. Both of these techniques are used to create relief carvings that can be used for decorative purposes or to tell stories.