The Awá are one of only two nomadic hunter-gathering tribes left in the Amazon. According to Survival, they are now the world's most threatened tribe, assailed by gunmen, loggers and hostile settler farmers.
Their troubles began in earnest in 1982 with the inauguration of a European Economic Community (EEC) and World Bank-funded programme to extract massive iron ore deposits found in the Carajás mountains. The EEC gave Brazil $600m to build a railway from the mines to the coast, on condition that Europe received a third of the output, a minimum of 13.6m tons a year for 15 years. The railway cut directly through the Awá's land and with the railway came settlers. A road-building programme quickly followed, opening up the Awá's jungle home to loggers, who moved in from the east.
It was, according to Survival's research director, Fiona Watson, a recipe for disaster. A third of the rainforest in the Awá territory in Maranhão state in north-east Brazil has since been destroyed and outsiders have exposed the Awá to diseases against which they have no natural immunity.
"The Awá and the uncontacted Awá are really on the brink," she said. "It is an extremely small population and the forces against them are massive. They are being invaded by loggers, settlers and cattle ranchers. They rely entirely on the forest. They have said to me: 'If we have no forest, we can't feed our children and we will die'."
But it appears that the Awá also face a more direct threat. Earlier this year an investigation into reports that an Awá child had been killed by loggers found that their tractors had destroyed the Awá camp.