The first 100m-class keyhole mound built in the Tamateyama group, the reputed source of the Important Cultural Property stone coffin lid at Anpukuji, and known as Kachimakeyama after a 1615 battle of the Siege of Osaka fought here.
Finds & research
4 tubular beads, 2 spindle-whorl-shaped stone objects, 13 bronze arrowheads, at least 1 iron sword or spear, at least 1 iron sword, at least 14 iron arrowheads, over 80 small iron plates (from a laced helmet), at least 3 spokeshaves and at least 2 chisels (from sieving the looters' pit fill in 2008); cylindrical, morning-glory and jar-shaped haniwa. The split-bamboo-shaped stone coffin lid said to come from the mound (tuff from Mt. Washinoyama in Sanuki, about 260cm long, with chokkomon patterns) is an Important Cultural Property.
Official status & archaeological view
Official status
The split-bamboo-shaped stone coffin lid kept at Anpukuji Temple, said to have come from this mound, was designated an Important Cultural Property in 1990.
Archaeological view
A keyhole mound on the highest ground of the northern Tamateyama ridge, its front facing west-southwest. Kashiwara City gives the length as about 110m (not finalized, as the edge of the rear circle has not been detected), while the Agency for Cultural Affairs' Important Cultural Property description gives about 150m. Built in 3 tiers. The pit chamber (presumed) at the summit of the rear circle had lost its walls to looting, but a red-painted gravel surface of about 4.0m × 1.5m survived on the floor of the burial pit, where the coffin is thought to have lain. Its cylindrical haniwa and earliest-stage morning-glory haniwa resemble those of Higashi-Tonozuka Kofun in Nara. Dated to the end of the 3rd century, following Mound 9, it is regarded as the first 100m-class keyhole mound of the group.
Field notes
South of the Kashiwara City senior welfare centre Yasuragi-no-sono. The southern half of the front part has been cut away into a cliff, and the north-west of the rear circle was altered by orchards. Two lengths are on record: about 110m (Kashiwara City, not finalized) and about 150m (Agency for Cultural Affairs). The stone coffin lid is preserved under a shelter in the Anpukuji grounds. Pairs with Tamateyama Kofun No.1.