A mausoleum reference site also called Maruyama or Nikiyama Kofun, located at Niki-cho, Yamatokoriyama.
Finds & research
IHA investigations during conservation work identified haniwa fragments and stone material. The central burial facility and grave assemblage remain unknown.
Two views on the occupant
Archaeological view
A 122.5m keyhole mound with a moat at Niki-cho, Yamatokoriyama. IHA investigations accompanying conservation work identified haniwa and support an early-5th-century date (the cylindrical haniwa are of an older, early-5th-century type).
Imperial Household Agency view
The IHA manages it as the Koriyama Mausoleum Reference Site. No occupant has been identified.
Field notes
The IHA-managed mound is closed; follow on-site signs when viewing it from outside.