Director-producer Adrian Cowell spent two years on an expedition into hitherto unexplored areas of the Amazon, in an effort to make contact with the Kreen-Akrore Indians, one of the few remaining tribes that has had no contact with the outside world.

The film provides a complex examination, not only of the expedition itself, but also questions the morality of tainting the ways of a savage but "pure" race, with the ways of materialistic civilisation.

Artistically the film was immaculate and highly absorbing; the jungle is a telementarian's paradise with its wealth of weird and wonderful foliage and atmospheric sound effects. But the programme's strength is in its relevance to the ethics of progress in general.

Kauf in Variety

Golden Gate Award, San Francisco 1970