Igenoyama Kofun
Japan
Igenoyama Kofun is a Kofun period keyhole-shaped burial mound, located in the Shōryuji-Kugai neighborhood of Nagaokakyō, Kyoto in the Kansai region of Japan. The tumulus was designated a National Historic Site of Japan in 1981, and was incorporated into the Otokuni Kofun Cluster in 2016.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).