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. Traditionally the fight is a way to impress women and find a wife. The fights are brutal and sometimes result in death. The combatants fight with little or no clothing and sometimes no protection at all. The Suri are a pastoralist Nilotic ethnic group in Ethiopia. The construction of the Gibe III dam, the third largest hydroelectric plant in Africa, and large areas of very "thirsty" cotton and sugar plantations and factories along the Omo river are impacting heavily on the lives of tribes living in the Omo Valley who depend on the river for their survival and way of life. Human rights groups fear for the future of the tribes if they are forced to scatter, give up traditional ways through loss of land or ability to keep cattle as globalisation and development increases. / AFP PHOTO / CARL DE SOUZA