From the fourth to fifth century, however, there are a number of remains such as imperial mausoleums and burial mounds in the west foot of Mt. Nijo-zan, so it is considered that there were already many people passersby.
二上山の西麓（現在の大阪府太子町(大阪府)）には4世紀から5世紀にかけての陵墓・古墳などの遺跡が数多く残っているため、すでにかなりの人々の往来があったと思われる。