The Omo valley is dominated mainly by many ethnic groups who speak Omotic language as classified by linguistics. The region and the people are one of the least affected by the modern world. The life style of the people has hardly changed for centuries. People still live in simple make shift huts, dress animal skins and drink from calabashes. The area is a veritable paradise for photographers and naturalists.
The people of the Omo Valley and their culture have been source of fascination for travelers. The Hammer tribes who are well known for their sense of elegance are the major ethnic group in the region. The Surma and Mursi women, who wear lip plates by piercing their lower lip, have been compelling tourists to travel to their land to see what seems impossible. In addition, the Omo valley is rich in human prehistory; archaeologists have unearthed the remains of earliest human being on earth. The area is also known for the existence of large number of wildlife of a great variety.