On the process of acceptance of Zenpokoenfun(Keyhole-shaped tumuli) in San-in District, Japan

复丹集古坟的考古调查结果，对研究三音禅坡坟的接受过程有重要贡献。经过6年的调查，我们发现福丹吉墓室是三音地区最早的禅钵房之一，它是一种锁眼状的墓室，后呈四边形。由于破坏性的抢劫，墓葬本身和随葬品都完全丢失了。但是，土丘的建造技巧却得到了很好的观察。除此之外，我还观察并记录了几个早期古坟的陪葬品。

The results of archaeological investigations at Fudanji tumulus have made considerable contribution to research into the process of acceptance of Zenpokoenfun(keyhole-shaped tumuli) in San-in. Our 6-years investigation reveals that the Fudanji tumulus is one of the earliest Zenpokohofun, keyhole-shaped tumuli with a quadrangular rear potion, in San-in. Because of destructive robbing, the burial itself and funerary objects were totally lost. But, the construction skill of burial mound was well observed. Other than that above, I observed and recorded funerary objects from several early Kofun-period tumuli in To t to r i pref.