bronze mirror depicting four beasts and seven pseudo inscriptions. Based on the burial goods and excavated shards of Haji ware pottery, it is believed that the tumulus was built between the end of the 4th century and the beginning of the 5th century. Restoration work was carried out and the tumulus has regained its original appearance. The excavated artifacts are stored and exhibited at the . The tumulus is located about six minutes by car from JR West Kishin Line Mimasaka-Sendai Station. See also List of Historic Sites of Japan (Okayama) References External links Tsuyama City Department of Tourism Okayama Prefecture home page Kofun History of Okayama Prefecture Tsuyama Historic Sites of Japan Archaeological sites in Japan