Funkyubo in Sanin is presumed to have emerged in Miyoshi in Chugoku Sanchi (Chugoku Range) and yosumi tosshutsugata funkyubo (square grave mounds with four corners protruding outward) (approximately 45 m x 35 m in large size), appeared in the Izumo region.
中国山地の三次で発生したと推定され、出雲地域で発達した四隅突出型の墳丘墓（大きなものは約45メートル×約35メートル）が現れる。