One of a fascinating series of pictures that moved yesterday. It looked like a scene right out of the Lost World. 'We did the overflight to show their houses, to show they are there, to show they exist,' said uncontacted tribes expert Jose Carlos dos Reis Meirelles Junior. That they reacted by shooting arrows at the plane just amazes me. Is this the first time they've ever seen a plane? I wonder if years down the road, this tribe will look back on that day as the beginning of the end for their way of life.

National Foundation of the Indigenous People of Brazil /EPA
'Uncontacted Indians' of the Envira, who have never before had any contact with the outside world, photographed during an overflight in May 2008, as they react to the overflight at their camp in Brazil, close to the border with Peru.