Nanakoshiyama Kofun
Japan
Nanakoshiyama Kofun is a keyhole-shaped (zempō-kōen fun) Kofun period burial mound located in what is now the Kamiochiai neighborhood of the city of Fujioka, Gunma Prefecture in the northern Kantō region of Japan. The site was designated a National Historic Site of Japan in 1927, an expanded in 1996.
Cemetery data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).