The Makimuku ruins are ruins in Nara Prefecture Sakurai near Mount Miwa of the Yayoi Period. It is designated as a national historic site . It is an archaeological site that began in the 3rd century , and some researchers consider the area to be the birthplace of the Kofun system. There is a theory that they are the center of Yamatai country, and six ancient burial mounds such as Hashihaka Kofun are distributed.