A sculptural technique where the image is carved into a flat surface, leaving the surrounding area untouched and at the original plane. The sculpted elements are recessed, appearing lower than the background. An example can be found in ancient Egyptian art where figures and hieroglyphs were often created using this method, giving a sense of depth within a limited space.
This method offers significant advantages, particularly in environments with strong sunlight, as the shadows cast by the recessed areas enhance the visibility and clarity of the design. Historically, this technique was employed for its durability and ability to withstand weathering, making it suitable for exterior architectural decoration. Its prevalence in various cultures underscores its enduring appeal as a means of artistic expression and storytelling.