Tsubai Otsukayama Kofun
Kizugawa, Japan
Tsubai Ōtsukayama Kofun is a Kofun period keyhole-shaped burial mound, located in the Yamashiro neighborhood of the city of Kizugawa, Kyoto in the Kansai region of Japan. The tumulus was designated a National Historic Site of Japan in 2008. It is noted for the bronze mirrors which were found within. These artifacts are collectively designated a National Important Cultural Property.
Cemetery data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).