Rare glimpse of isolated Peruvian tribe
1 February 2012 Last updated at 16:27 GMT
Rare photos of an isolated tribe living in the Amazon region of south-eastern Peru have been released.
The British-based Survival International group says the indigenous Mashco-Piro tribe has rarely been in contact with the outside world.
'Uncontacted' people are those who live without significant contact with other civilizations.
Tom Santorelli reports.