Traveling to all corners of the world, from Papua New Guinea to Kazakhstan and Ethiopia, Nelson spends two weeks living with each tribe, immersing himself in their lives and traditions and taking their portraits.
Here's how he describes the project: "In 2009, I planned to become a guest of 31 secluded and visually unique tribes. I wanted to witness their time-honoured traditions, join in their rituals and discover how the rest of the world is threatening to change their way of life forever."
"Most importantly, I wanted to create an ambitious aesthetic photographic document that would stand the test of time. A body of work that would be an irreplaceable ethnographic record of a fast disappearing world."
One look at his images and you'll see he's well on his way to achieving said body of work.
To learn more about the 'Before They Pass Away' project and to see ALL of Nelson's stunning images, head on over to his website here!