Oni-no-iwa Kofun
Japan
Oni-no-iwa Kofun is a pair Kofun period burial mounds, located in the Shoninnakamachi neighborhood of the city of Beppu, Ōita, on the island of Kyushu Japan. The tumuli were designated a National Historic Site of Japan in 1957 with the area under protection extended in 2017.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).