The Main distribution range was northern Kyushu, especially Chikuzen, Chikugo Provinces and the eastern Hizen region, and the custom was distributed as a secondary burial system in the surrounding area.
主たる分布域は北部九州地域でも筑前・筑後国・肥前東部域であり、この周辺地域では副次的な墓制として分布する。