Middle Awash archaeological research is aimed at understanding human behavior through time.  This research involves the analysis of early hominid technology, land use, and subsistence patterns.  The study area presents the longest record of hominid technological change on earth, spanning the entire range of hominid technology during the last 2.5 million years.  Stone tools belonging to the Oldowan, developed Oldowan, and a range of Acheulean, Middle Stone Age, and Late Stone Age archaeological technologies have been identified.