Bontoc War shield from the Philippines

A good shield of the Bontoc tribe, Philippines. Carved from a single piece of wood, bound with thick woven cane, shaped curvature to protect the body from spears, arrows and headaxes. The wood is thickest at the center point, the grip with a deep recess for the hand. Nice old black patina, dating to the early 20th century. The cut out V-shape to the bottom of the shield is supposedly to hold an enemies head to the ground.  Southern Asia, indonesia, igorot, moro