Kurozuka Kofun
Tenri, Japan
Kurozuka Kofun is a Kofun period keyhole-shaped burial mound, located in the Yanagimoto-cho neighborhood of the city of Tenri, Nara in the Kansai region of Japan. The tumulus was designated a National Historic Site of Japan in 2001. It is noted for the 33 triangular-rimmed bronze mirrors with divine beasts that were excavated in almost the same arrangement as when they were originally buried.
Monument data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).