Thus far, the foundations for 12 pit dwellings from the Jōmon period, 37 clay-jar burials, six dirt burials and one square-sided tumulus from the Yayoi period, 11 pit dwellings from the Kofun period, 6 pit dwellings from the Nara period, 19 pit dwellings and one raised floor building form the Heian period have been discovered.