This is my cousin Shaun, who used to be my bird hunting partner before he went over to the Dark Side of traditional archery. Shaun now makes his own bows and arrows. He got the point in the picture as a gift from flintknapper Woody Blackwell on a hunt in Texas. It's made of obsidian, a volcanic glass rock that cuts so well it is preferred for some types of cardiac surgery. Obsidian was prized by paleo-indian hunters and it formed the cutting edge of the macuahuitl --- a kind of club-sword -- of the Aztecs. Blackwell is one of a few modern flintknappers who makes their points and hunts with them.