Humans have explored the Earth a million times over, yet we’re still finding new things about our planet. That’s just what makes this world so great.

But just when we think we’ve discovered every group of people in existence, this lost tribe in the Amazon changes everything we know about civilization. They’ve hidden for centuries from the rest of the world—and have never so much as been seen by outsiders before.

Until now.

These people are on the brink of extinction, and there’s nothing that governments are doing to protect them. Visit Survivor International to donate, learn more about the dangers indigenous people face, and to help stop illegal logging from threatening this tribe and others.

Be sure to share their important video with your friends below!