Tamaoka Kofun cluster - Credit: Wikimedia Commons
The is a group of seven kofun burial mounds located in the Shinya, Tamaoka and Tamano neighborhoods of the city of Kaisai, Hyōgo Prefecture, in the Kansai region of Japan. The Tamaoka Kofun was individually designated a National Historic Site in 1943, with the others added in 1978 and the area under protection expanded in 1997. Read more on Wikipedia
Source: en.wikipedia.org