'Os Ultimos Livres'
An isolated tribe living in the Amazon rainforest on the Brazil-Peru border has been filmed for the first time.
Jose Carlos Meirelles, of Funai, said his government agency needs proof of the existence of "uncontacted" Indian communities in Brazil due to the threat posed by illegal logging and mining. They are known as "uncontacted" because they have only limited dealings with the outside world.
The BBC was allowed to film from 1km away using a stabilised zoom lens.