Tomida Chausuyama Kofun
Japan
The Tomita Chausuyama Kofun is a kofun burial mound located in the Ōkawamachi Tomidanaka neighborhood of the city of Sanuki, Kagawa Prefecture, on the island of Shikoku of Japan. The tumulus was designated a National Historic Site in 1993. It is the largest burial mound in the Shikoku region, and is estimated to have been built around the middle of the 5th century (the latter half of the early Kofun period).
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).