Haginoo Kofun
Japan
The Haginoo Kofun is a Kofun period burial mound, located in the Higashihagio neighborhood of the city of Ōmuta, Fukuoka Prefecture Japan. The tumulus was designated a National Historic Site of Japan in 1961. It is the only survivor of what was once known as the Shobara Kofun Cluster.
Monument data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).