A type site near Peking, China, for an Upper and Middle Paleolithic culture. It is the place where 40 of the first skeletons of Homo erectus was found - in limestone fissures of Middle Pleistocene deposits, probably of Mindel date, some 500,000 years old. The find also yielded extinct animals; flake, core, and chopping tools of quartz and sandstone; and traces of fire. From another area came skeletons of Homo sapiens with stone and bone tools of the Upper Palaeolithic.