 The community had lodgings specifically set aside for traders and travelers from the Tokara Islands.Another settlement, known as Izumizaki, lay on the mainland of Okinawa Island, just across the Kumoji River from Ukishima.Izumizaki had no notable or major port facilities and is believed to have been simply an extension of the residential community of Naha proper, which thus spread onto the mainland as the population and according demand for land grew.