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Remarkable footage of 'uncontacted' tribesman hunting in the Amazon rainforest has emerged amid fears they could be wiped out by logging.
In the minute long clip, a bare-chested man from the Awa tribe can be seen sniffing a machete before appearing to turn and look at the person filming him.
But just seconds later he and others stood alongside him turns and run away.
The Awa are believed to be the world's most threatened tribe, according to the NGO Survival International.