The Lower Valley of the Omo River is a prehistoric site where many
hominid fossils have been found. They are of fundamental importance
in the study of human evolution. It has been registered in 1980.
Several hominid fossils and archaeological localities, dating to the
Pliocene and Pleistocene, have been excavated by French and American
teams. Fossils belonging to the genera Australopithecine and Homo
have been found at several archaeological sites, as well as tools
made from quartzite, the oldest of which date back to about 2.4
million years ago.