Slingstones were used as weapons by ancient Chamorro warriors. Though commonly associated with weaponry of the Latte period, these stones were used in early colonial history as the arms of resistance to Spanish colonization.
One account by Father Pedro Coomans in The History of the Mariana Island Mission for the 1667-1673 period describes the weapons as such:“Their offensive weapons include the sling, which they aim very skillfully at the head. Out of small ropes they weave a sort of net-bag, in which to carry stones with an oblong shape, some formed out of a marble stone, and others of clay, hardened in either the sun or fire. They whirl and shoot those so violently. Should it make an impact upon a more delicate part, like the heart, or the head, the man is flattened on the spot. Then, if envy would make them want to burn a house from a adistance, they would stuff the perforated side of it with tow burning with a very ferocious fire, which, with a swift movement became a flame, and sail away to seek shelter in enemy houses.”