The gate itself consists of two great monoliths capped with a huge lintel that measures 4.5×2.0×0.8 m (15×7×3 ft). Above the lintel, the masonry courses form a corbelled arch, leaving an opening that lightens the weight carried by the lintel. This relieving triangle is a great limestone slab on which two confronted lionesses or lions carved in high relief stand on either sides of a central pillar.