The Izuka-kofun Tumulus is an escallop-shaped, large keyhole-shaped mound called Makimuku type tumulus in the latter half of the early Kofun period, but now its existence cannot be confirmed because the site was completely flattened after the Middle Ages.
イヅカ古墳（いづかやまこふん）は古墳時代前期後半の纒向型といわれるホタテ貝型の前方後円墳であるが、現在は中世以降に全て削平されたその姿は確認できない。