New Guinea was the last place on Earth to have head hunters. I think it was finally eliminated in the 1970s. Although there have been deadly clashes, including decapitation, even in the 90s. Maybe the tribes were finally educated. Anyway, I would not want to go into an area where there were head hunters. Maybe that's why it is pristine. Things will change.
But
https://www.youtube.com/watch?v=Ea5aoOJ5bJo