"The Jomon period, which encompasses a great expanse of time, constitutes Japan's Neolithic period. Its name is derived from the 'cord markings' that characterize the ceramics made during this time. Jomon people were semi-sedentary, living mostly in pit dwellings arranged around central open spaces, and obtained their food by gathering, fishing, and hunting." Source: Heilbrunn Timeline of Art History, The Metropolitan Museum of Art.
Note: It's possible that Kennewick Man was related to the Jomon people. See article below.