A Middle Pleistocene chopper-chopping tool culture from Java characterized by coarse flakes in the shape of cleavers, known from a very prolific site in south central Java. In the Patjitanian, the main types of implements consist of single-edged choppers and chopping tools that occur in association with primitive flakes with unprepared, high-angle striking platforms. There are also pointed, bifacial implements that have been described as crude hand axes.