A mirror with triangular rims and designs of divinities and animals presented from China to Himiko, of the Yamatai Kingdom, was excavated from the Tsubai-Otsukayama Tomb (among others), and the area is sort of a region of relics that has caused a stir regarding legends concerning the Yamatai Kingdom and Himiko.
椿井大塚山古墳は邪馬台国卑弥呼に中国より献上された三角鳥獣神鏡が発掘されるなど邪馬台国や卑弥呼伝説にも一石を投じる遺跡地帯である。