Hyogo's largest kofun, overlooking the Akashi Strait in Tarumi, Kobe. Restored over ten years from fiscal 1965, with reconstructed paving and haniwa rows.
Finds & research
Cylindrical and morning-glory haniwa and pottery; 80 finds are designated Important Cultural Properties. The burial facility is unexcavated and grave goods are unknown.
Two views on the occupant
Archaeological view
A three-tiered 194m keyhole mound, with a rear circle 125.5m across and 18.8m high and a front 82.4m wide and 13m high. Built in the late 4th century, it used about 2,784 tonnes of paving stone and an estimated 2,200 haniwa; the burial facility is unexcavated.
Imperial Household Agency view
Not designated by the IHA; a National Historic Site. The occupant is unknown and is interpreted as a powerful leader controlling Akashi Strait traffic.
Field notes
Free admission 09:00–17:00, last entry 16:30. Closed Mondays (next day if a holiday) and over New Year. The site is scheduled to remain open during nearby works from September 2026 to March 2027; check current notices.