Within the area of about 400 meters from east to west and 300 meters from north to south, there are pit dwelling houses surrounded by double karabori (dry moat), of which the structure is in common with Kannonjiyama Site in Izumi City, Osaka Prefecture.
東西約400メートル、南北300メートルの範囲内に竪穴式住居があって、二重の空堀が巡り、空堀の構造は大阪府和泉市の観音寺山遺跡に共通している。