A keyhole-shaped burial mound 122m in total length, positioned at the southern end of the Furuichi kofun group. The three-tiered mound retains its stone covering (fukiishi) and haniwa rows in good condition. It has a surrounding moat. Designated by the IHA as the joint mausoleum of Emperor Ankan (27th Emperor) and Princess Kamuzaki (daughter of Emperor Keitai). Marking the southernmost boundary of the Furuichi group, this mound symbolizes the era when large-scale kofun construction continued even as the tradition entered decline. Emperor Ankan, who inherited the throne from his father Emperor Keitai, is known for systematizing the miyake (royal estate) system. The joint burial with Princess Kamuzaki is a rare case for studying funerary customs of the imperial family.
Finds & research
No excavation permitted under IHA mausoleum regulations. Internal structure and grave goods remain unknown. Exterior viewable from public paths.
Two views on the occupant
Archaeological view
A late-Kofun keyhole mound at the southernmost point of the Furuichi group. 122m long, rear circle ~67m diameter, front section ~75m wide. Haniwa and stone covering (fukiishi) have been confirmed, demonstrating late-Kofun construction techniques. Emperor Ankan reigned c. 531–535, making this mound evidence that kofun construction in the Furuichi cluster continued into the 6th century. Dating of the haniwa types supports an early 6th-century attribution. Its proximity to the IHA-designated tomb of Emperor Keitai (Ota Chausuyama) is also noteworthy.
Imperial Household Agency view
Administered by the IHA as the mausoleum of Emperor Ankan (27th Emperor) and jointly the tomb of Princess Kamuzaki, daughter of Emperor Keitai. Formally named Furuchi-Takayatsukioka-no-Misasagi. Joint-burial mausolea are extremely rare among IHA-managed sites.[IHA Visiting Info] Address: 大阪府羽曳野市古市5丁目 / Access: 近鉄 古市駅から徒歩約10分 / Hours: 原則、8時30分～17時 (open year-round in principle). Stamp storage: 古市陵墓監区事務所.
Field notes
Entry is restricted as an IHA mausoleum, but the mound's outline can be viewed from surrounding roads. Though surrounded by residential development, the mound itself is well preserved. Habikino City Board of Education continues archaeological surveys in the vicinity.