Nakatsuka Kofun
The is a "kofun" burial mound located in what is now part of the town of Wakasa, Fukui in the Hokuriku region of Japan. The site was designated a National Historic Site of Japan in 1935. Overview. The Nakatsuka Kofun is one of a group of seven "kofun" located in the Wakibukuro neighborhood of central Wakasa, forming the Jōnozuka Kofun Cluster. It is west of the tracks of the JR West Obama Line railway and near a hill called (Zenbuyama, 膳部山). The tumulus is a , which is shaped like a keyhole, having one square end and one circular  end, when viewed from above. The Nakatsuka Kofun is in relatively poor preservation, as much has been destroyed over the centuries by agricultural activity and as a source of soil. The tumulus has a two-tier structure with "fukiishi", orientated north-south, with the posterior circular portion on the northern end. The total length is 72 meters and the circular portion has a diameter of 46 meters and height of six meters, and the anterior rectangular portion has a width of 26 meters. Some fragments of cylindrical "haniwa" have been found in the vicinity; however, the structure of the tumulus  has never been properly archaeological excavation excavated by archaeologists and the inner structure is unknown; however, a ground-penetrating radar survey in 2008 indicated the presence of a passage grave burial chamber similar to that of the Jōnozuka Kofun. Traces of a shield-shaped moat have also been found. The tumulus dates from the late 5th century to early 6th century AD. The name of the person interred is unknown; however from the name of the nearby hill (Zenbuyama, 膳部山), it mostly likely corresponds to the grave of a head of the Kashiwade clan (膳氏), who are recorded in the  Kojiki and "Nihon Shoki" as having served as "Kuni no miyatsuko" of Wakasa Province since the time of the legendary Emperor Kōgen. The tumulus is about 30 minutes on foot from Kaminaka Station on the JR West Obama Line.