The moat settlement at Etsuji site (Kasuya-cho, Fukuoka Prefecture) is an example of latter half of Initial Yayoi period, surrounded by two shallow ditches of about one meter wide.
江辻遺跡（福岡県粕屋町）弥生時代早期後半、幅約1メートルほどの浅い溝が周囲を二重に巡っている。