What are some of the other arts used in the Phillipines? Besides escrima/arnis/kali, I mean. Specifically anything used by any of the Igorot tribes, and the Bontoc in particular. I haven't seen anything about any type of fighting skills, or weapons used by them, except for spears, in a couple of carvings my mom used to have (I'm half igorot, Bontoc but apparently not head hunters). And of course large knives such as bolos, used mainly for farming, daily chores type stuff. I'm curious what helped them keep from under Spanish rule for so long, other than being in the more mountainous regions of the country.