31366724KofunPT2026-03-30 20:38:54UF31366725Great Burial PeriodNDUF31366726Great Tombs periodNDUF31366727Haniwa cultureNDUF31366728Kofun JidaiNDUF31366729Old Mound PeriodNDUF31366730Tumulus periodNDBT31335631Japanese ProtohistoricPT