Sairyo Kofun
Japan
Sairyō Kofun is a Kofun period keyhole-shaped burial mound, located in the Tannowa neighborhood of the town of Misaki, Osaka in the Kansai region of Japan. The tumulus and its surroundings were designated a National Historic Site of Japan in 1922. It is the 28th largest kofun in Japan and dates from the 5th century AD. It is also called the Nishi Nisanzai Kofun
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).