Hashihaka Kofun is one of front square back circle Kofun located in Nara. It is Kofun of the royal princess of 7th Emperor Korei. Archaeologist said this might be the Kofun of Queen Himiko.
She is the ruler of Yamataikoku that appears in the Chinese History record as the nation of Japan. She sent her messangers to China in 239 and she became the queen of Japan by the Chinese Emperor. She died in 248.