 Started during the Kamakura period (1185–1333), the tradition seems to have declined during the following Muromachi period, when storehouses and cemeteries came to be preferred.True "yagura" can be found also in the Miura Peninsula, in the Izu Peninsula, and even in distant Awa Province (Chiba).Tombs in caves can also be found in the Tōhoku region, near Hiroshima and Kyoto, and in Ishikawa Prefecture, however they are not called "yagura" and their relationship with those in Kanagawa Prefecture is unknown.