Age estimate for Akamura tomb mound in Tagawa by shape analysis

摘要

In 2018, a large keyhole-shaped tomb mound was discovered in Tagawa, Japan. The form interpretation was carried out for this tomb. The length is 443m, the diameter is 152m，and the height is 33m: the second biggest mound in Japan. On the other hand, Yamatai country existed in north Kyushu with the queen, Himiko. As a result, the dating for the mound was estimated as late the 3rd century to the 4th century. This estimate corresponded to the Himiko era.