Plemiona z doliny Omo - AFP

Children from the Suri tribe pose in Ethiopia's southern Omo Valley region near Kibbish on September 25, 2016. The Suri are a pastoralist Nilotic eth...

A woman from the Suri tribe with a lip plate poses in Ethiopia's southern Omo Valley region near Kibbish on September 25, 2016. The Suri are a pastor...

An elderly woman from the Suri tribe smokes a pipe in Ethiopia's southern Omo Valley region near Kibbish on September 25, 2016. The Suri are a pastor...

A woman from the Suri tribe carries firewood on her head in Ethiopia's southern Omo Valley region, near Kibbish, on September 25, 2016. The Suri are...

A woman from the Suri tribe wearing a lip plate paints her face in Ethiopia's southern Omo Valley region near Kibbish on September 25, 2016. The Suri...

Men from the Suri tribe take part in a "Donga" or stick fight in Ethiopia's southern Omo Valley region near Kibbish on September 24, 2016. Traditiona...

Men from the Suri tribe take part in a "Donga" or stick fight in Ethiopia's southern Omo Valley region near Kibbish on September 24, 2016. Traditiona...

Men from the Suri tribe take part in a "Donga" or stick fight in Ethiopia's southern Omo Valley region near Kibbish on September 24, 2016. Traditiona...

Men from the Suri tribe take part in a "Donga" or stick fight in Ethiopia's southern Omo Valley region near Kibbish on September 24, 2016. Traditiona...

Men from the Suri tribe take part in a "Donga" or stick fight in Ethiopia's southern Omo Valley region near Kibbish on September 24, 2016. Traditiona...

Men from the Suri tribe take part in a "Donga" or stick fight in Ethiopia's southern Omo Valley region near Kibbish on September 24, 2016. Traditiona...

Men from the Suri tribe take part in a "Donga" or stick fight in Ethiopia's southern Omo Valley region near Kibbish on September 24, 2016. Traditiona...

Men from the Suri tribe take part in a "Donga" or stick fight in Ethiopia's southern Omo Valley region near Kibbish on September 24, 2016. Traditiona...

Men from the Suri tribe wait for a"Donga" or stick fight in Ethiopia's southern Omo Valley region near Kibbish on September 24, 2016. Traditionally t...

Men from the Suri tribe take part in a "Donga" or stick fight in Ethiopia's southern Omo Valley region near Kibbish on September 24, 2016. Traditiona...

A boy from the Karo tribe poses for a photo in front of the Omo river in Ethiopia's southern Omo Valley region on September 23, 2016. The Karo are a...

Members of the Karo tribe pose in Ethiopia's southern Omo Valley region on September 23, 2016. The Karo are a Nilotic ethnic group in Ethiopia famous...

Members of the Karo tribe pose in front of the Omo river in Ethiopia's southern Omo Valley region on September 23, 2016. The Karo are a Nilotic ethni...

Young boys from the Mursi tribe walk on stilts in Ethiopia's southern Omo Valley region, near Jinka, on September 22, 2016. The Mursi are a Nilotic pa...

Boys from the Karo tribe pose in front of the Omo river in Ethiopia's southern Omo Valley region on September 23, 2016. The Karo are a Nilotic ethnic...

Members from the Karo tribe pose in front of the Omo river in Ethiopia's southern Omo Valley region on September 23, 2016. The Karo are a Nilotic eth...

Members of the Karo tribe pose in front of the Omo river in Ethiopia's southern Omo Valley region on September 23, 2016. The Karo are a Nilotic ethni...

Women from the Mursi tribe pose for a photo in the Mago National park near Jinka in Ethiopia's southern Omo Valley region on September 21, 2016. The...

A woman from the Mursi tribe poses for a photo in the Mago National park near Jinka in Ethiopia's southern Omo Valley region on September 21, 2016. T...

A woman from the Mursi tribe poses for a photo in the Mago National park near Jinka in Ethiopia's southern Omo Valley region on September 21, 2016. T...

A woman from the Mursi tribe poses for a photo in the Mago National park near Jinka in Ethiopia's southern Omo Valley region on September 21, 2016. T...

A woman from the Bena tribe eats honey collected from a tree in Ethiopia's southern Omo Valley region near Turmi on September 20, 2016. The Bena are...

Hamar women dance before a bull jumping ceremony in Ethiopia's southern Omo Valley region near Turmi on September 19, 2016. The Hamar are a Nilotic et...

A man from the Hamar tribe takes part in a bull jumping ceremony in Ethiopia's southern Omo Valley region near Turmi on September 19, 2016. The Hamar...

A Hamar man has his face painted before a bull jumping ceremony in Ethiopia's southern Omo Valley region near Turmi on September 19, 2016. The Hamar...

Men from the Hamar tribe try to control a bull prior to a bull jumping ceremony in Ethiopia's southern Omo Valley region near Turmi on September 19, 2...