ABC News correspondent Dan Harris traveled deep into the Amazon to live with two of the most isolated Indian tribes on the planet. These tribes have almost no contact with the modern world. Only a handful of their members have ever ventured out of the villages, where the tribesmen live for the most part as they have perhaps as far back as the stone age.
In this photo, Enawene Nawe boys mug for the camera.
(Almin Karamehmedovic/ABC News)