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, pottery and other finds; 80 finds are designated Important Cultural Properties. Kobe City states that the burial facility has not been identified; the Nara National Research Institute for Cultural Properties' national cultural-property database (data from Kobe City) records fragments of a jasper lidded container collected from the top of the rear mound.
Official status & archaeological view
Official status
A National Historic Site.
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 has not been identified. Kobe City explains that, because it stands at a key point for sea traffic overlooking the Akashi Strait, it is thought to be the tomb of a powerful figure closely tied to that 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.