Positioned below the front brim of "Slim's" headdress and flanked by large, unadorned ear flares is an elaborate face mask (figure 4a). The mask is secured to the head by tie-ribbons located on either side of its mouth. The mouth itself is drooping and contains two fangs that descend from an otherwise toothless upper gum. The upper lip, topped by a pug nose, extends beyond the mouth in a triangular overhang. From each ovoid eye (perhaps once inlaid with obsidian or magnetite) descend three stripes, each of which ends at the top of the U-shaped mouth bracket. The crenellated elements, above the eyes, are commonly referred to as flame eyebrows.