Living in a city apartment with all amenities and Wi-Fi access you can hardly imagine what a tribal life could be. Most of the tribes live in villages secluded from the civilized world and follow their traditional customs and speak their language. Some of these, like the Tsaatans in Mongolia, change their place five to ten times a year and had to depend on reindeer herding for their sustenance. Photographer Jimmy Nelson has shot some of these slowly disappearing tribes under the project “Before They Pass Away”. Scroll down the page for seeing their amazing photographs.