Tanushimaru Otsuka Tumulus: A Glimpse into Ancient Japan

The Tanushimaru Otsuka Tumulus stands as a significant testament to Japan's ancient burial traditions. This historical landmark, located in Kurume, Fukuoka, features an impressive earthen mound that dates back to the Kofun period (approximately 300-600 AD). The keyhole-shaped tumulus, known as a *zenpō-kōen-fun*, is one of the largest in northern Kyushu, with a total length of 103 meters. The posterior circular portion has a diameter of 60 meters.Constructed in the late 6th century, the tumulus offers a glimpse into the funerary practices of ancient Japanese society. The mound is made of earth and stone and was originally covered in *fukiishi* (stone paving). Although no *haniwa* clay figures have been found, the site provides a serene atmosphere for visitors to appreciate its scale and design. Informational plaques dot the landscape, offering historical context and archaeological findings.The Tanushimaru Kofun Group includes several decorated *kofun*, such as the Teratoku Kofun, Nakabaru Kitsunezuka Kofun, and Nishidate Kofun. The Tanushimaru Ōtsuka Kofun is the largest in the group. The front section of the mound has been significantly leveled because of historical land cultivation. The burial chamber is a horizontal stone chamber, though its interior remains unexplored.