A large round mound near the mouth of the Takeno River and a National Historic Site containing a chest-shaped sarcophagus sometimes called a “ruler's coffin.” Kyotango City’s learning materials give its diameter as about 55m, while the Agency for Cultural Affairs’ additional-designation text and Kyotango City’s digital museum give about 54m.
Finds & research
The chest-shaped sarcophagus contained a clay pillow, knife, mirror, beads, weapons, armor-related objects, and other goods.
Official status & archaeological view
Official status
It was designated a National Historic Site on 1 July 1957.
Archaeological view
An approximately 55m (about 54m in some sources) two-tiered round mound at Takano, Tango-cho, Kyotango (the Agency for Cultural Affairs database gives the location as Miya, Tango-cho). Kyotango City dates it to the mid-5th century (a 2010 city publication says the early Middle Kofun period). It has stone facing and haniwa. An assembled chest-shaped stone sarcophagus was identified in a 1939 investigation.
Field notes
Follow Kyotango City guidance and on-site signs for accessible areas and visitor routes.