News : Brazil Isolated tribe photographed

Amazon Indians from one of the world's last uncontacted tribes have been photographed from the air, with images released showing them painted bright red and brandishing bows and arrows.

The photographs, taken by Survival International near the border between Brazil and Peru, are rare evidence that such groups exist.

A Brazilian official involved in the expedition said many such tribes are in increasing danger from illegal logging.

Of more than 100 uncontacted tribes worldwide, more than half live in either Brazil or Peru, Survival International says.

It says all are in grave danger of being forced off their land, killed or ravaged by diseases they've never been exposed to because of their isolation.