The Omo Valley, also known more specifically as the Lower Valley of the Omo, extends over 165 square kilometres in southwestern Ethiopia. Containing Nech Sar National Park, it has been a UNESCO World Heritage site since 1980 and is currently managed by the Ethiopian Information and Culture Departments. Having yielded a wealth of hominid fossils and some of the earliest evidence of prehistoric technical activity, the Omo Valley remains home to a uniquely diverse range of tribal cultures – many of which, due to the region’s remoteness, have until recently been effectively isolated from the modern world. The landscape here is varied, ranging from savannah and riverine areas to forests and mountains, and is home to a wildlife portfolio comprising more than 70 species of mammals, crocodiles, and birdlife, including the Nechisar nightjar, often considered the rarest bird on the planet. While the Omo Valley is recognised as a site of preeminent importance for the study of prehistoric humanity, and for its cultural diversity today, this heritage is far from secure. Responsible tourism has had positive effects on the region. Still, it can also be exploitative in its less thoughtful forms, and the Gibe III dam (inaugurated in 2016) has had a disruptive impact on the annual floods on which the agricultural practices of many local cultures rely. UNESCO also notes that the area’s boundaries need to be more precisely demarcated to ensure it can be protected from irresponsible development activities.
The principal reason for visiting the Omo Valley is undoubtedly to witness the ways of life of the diverse tribal cultures that call the area home, including the Karo, Mursi, Kwegu, Hamar, and several others. In addition to visits to these varied and distinctive communities, visitors also have the opportunity to explore sites of significant historic and prehistoric interest, including hilltop settlements, rock engravings, and terraced fields.