The photograph above shows members of a tribe on the border of Peru and Brazil firing arrows at a passing airplane. Although the name of the tribe is unknown, apparently they have been being monitored by the Brazilian government for decades. That being said, nobody has ever had face-to-face contact with the tribe, so who knows how much they know about the outside world. However, judging by the fact that they think their arrows will do damage to a passing airplane, chances are they don't know too much about what is happening outside of their jungle region.
A few things are known about this enigmatic tribe. They have shaved foreheads and long hair. They plant cotton, or pick it growing in the jungle, and spin it into cloth for skirts. The women make cotton belts and headbands. Also, they make hammocks that are hung below huts covered by thick palm roofs.
"They have big fields, and they grow cassava, maize, almonds, pumpkin, and various types of potato, papaw, yams, and banana," according to José Carlos Meirelles, an official with Brazil's Indian-protection agency (FUNAI). Check the video below for more insight: