Jimmy Nelson's work has taken him from war-torn Afghanistan, Pakistan and the former Yugoslavia to the remotest corners of China and Tibet. But in 2009, the British photographer outdid even himself when he embarked upon a four-year trek around the world—cutting through Amazonian jungles, braving freezing temperatures in Siberia and even surviving a case of meningitis in Ethiopia—to photograph some of the world’s last indigenous tribes. [via Ralph Lauren ] Nelson documented 55 cultures and tribes, many of which are at risk of disappearing forever, often in remote parts of the world, using a 50-year-old 4x5 camera. His book, Before They Pass Away ,is a collection of the images he made on his epic journey. Jimmy Nelson Jimmy Nelson A Maasai warrior. "To be a Maasai is to be born into one of the world’s last great warrior cultures," Nelson's website reads. The Maasai people, who live in Tanzania and Kenya, are said to have migrated to the region from Sudan in the 15th ...