Update #28 years ago
What will happen to this tribe if contacted? I think the article behind the link describes it very well (http://www.bbc.com/future/story/20140804-sad-truth-of-uncontacted-tribes) but in short, they will die of the flu or some other disease they have no resistance against.
Peru is infamous for this and the maltreatment of remote, natural peoples must stop!
Update #18 years ago
I have seen first hand in the Central African Republic in the 1980's what contact between naturally living peoples and civilized society can do to those people. A small group of Pygmy people came out of the forest looking for metal to make arrowheads.
About one year later we went to see them again and almost all of them had died, from the flue or common cold. The small family of six that had survived went back to the forest and I hope they are still there...