Photos emerge of cannibal tribe in Indonesia that have no contact with the outside world

"For the Korowai, if someone falls out of a tree house or is killed in battle then the reason for their death is pretty obvious. But they don't understand microbes and germs (which the rain forests are rife with) so when somebody dies mysteriously to them (of a disease), they believe it is due to a khakhua, a witch man who comes from the netherworld.

A khakhua possesses the body of a man (it can never be a woman) and begins to magically eat their insides, according to logic of the Melanesian imperative you must pay back in kind. They must eat the khakhua as it ate the person who died. It is part of their revenge based justice system."