The uncontacted tribes are not unknown and they are not ignorant that there is a world outside with airplanes. They are uncontacted because they choose not to m

The uncontacted tribes are not unknown and they are not ignorant that there is a world outside with airplanes. They are uncontacted because they choose not to make contact with non-tribal outsiders. This is in part due to violent conflicts in the past. There's a statement by a Yamomani leader on the site that uncontacted tribes should be left alone on their own lands and since governments like Peru were denying their existence, the photos will help. http://www.survivalinternational.org/material/1157 http://www.survivalinternational.org/material/1157 Yanomami if you recall are a stone age people from this area who only made peaceful contact a few decades ago. They have had contact and familiarity with some of these other tribes. The tribes in this video are protected somewhat by the Brazilian government which uses aerial visits to check on the condition of tribes and make sure that outsiders have not breeched the perimeter of the reserve.