82m keyhole mound in Kameoka City — the largest Late Kofun period mound in the Tanba region. National Historic Site. Linked by some scholars to Yamato Hiko no O, a figure in the succession dispute preceding Emperor Keitai, adding historical romance. A key ancient site in the Kameoka Basin. Within walking distance of JR Chitose Station.
Finds & research
Cylindrical haniwa from Osaka Prefecture production sites found near the rear section. Grave goods details not investigated or published.
Two views on the occupant
Archaeological view
82m keyhole mound (restoration estimate: ~88m), ~7.5m high rear section. Three-tiered. Early 6th century — the largest Late Kofun period mound in the Tanba region. Cylindrical haniwa from production sites in Osaka Prefecture found near the rear. Theories suggest the occupant may be Yamato Hiko no O, linked to the succession dispute preceding Emperor Keitai's enthronement. Presumed tomb of a powerful chieftain of the Kameoka Basin (former Tanba Province).
Imperial Household Agency view
Not designated by the IHA. Designated as a National Historic Site on December 18, 1982. Managed by Kameoka City. One theory proposes it is the tomb of Yamato Hiko no O, a 5th-generation descendant of Emperor Chuai.
Field notes
About 10–15 min walk from JR San-in Line Chitose Station. Kameoka City Cultural Museum introduces Tanba kofun culture. Set in the natural landscape of Chitose district — a quiet, contemplative kofun experience.