Sculpture that has grooves of various depths cut into the surface plane of stone while the surface remains clearly perceptible is sunken-relief sculpture.
Image result for Sculpture that has grooves of various depths cut into the surface plane of stone while the surface remains clearly perceptible is Relief sculpture is a complex art form that combines many features of the two-dimensional pictorial arts and the three-dimensional sculptural arts.
Sunken relief is a technique of relief sculpture in which figures or images are carved in low relief, but set within a sunken area so that the relief never rises beyond the original flat surface. This technique is largely restricted to ancient Egypt where it became common in the Amarna period and later.
