Kakuzuka Tumulus is a burial mound located in Hiratsuka, Onohara, Onohara-cho, Kanonji City. Located adjacent to Onohara Central Park, it is a large square mound with a mound size of approximately 42 x 38 m, the largest in Kagawa Prefecture.
The mound is surrounded by a deep moat, and the overall size, including the moat, is estimated to be about 48 x 45 m. The spatial volume of the stone chamber tends to shrink from the Bowari-zuka tumulus to the Hiratsuka tumulus to the Kakutsuka tumulus, but the length of the environs conversely shows a trend toward increasing in length. The burial facility in the main part is a double-sleeved, side-hole stone chamber that opens to the south-southeast. It is a single-chamber stone chamber, and granite is mainly used as the stone material. The floor area of the chamber is 10.1 m2 and the volume is 25 m3. The back wall and the left wall of the chamber are built in a single-tiered construction.
The excavated artifacts include a Sue ware fragment bowl and a jar. On October 7, 2015, it was designated as a National Historic Site as the Onohara Kofun Tumulus Group.
| address | 1533 Aza Hiratsuka, Onohara, Onohara-cho, Kanonji, Kagawa 769-1611 |
|---|---|
| map | |
| shape | flat-topped burial mound |
| scale | 41.7m×37.8m |
| burial facility | double-sided cave stone chamber |
| Total length of stone chamber | 12.5m |
| Burial chamber back wall | piling one layer on top of another |
| Construction period | anterior pituitary gland of the 7th century |
| car | Approximately 4 minutes (1.5 km) by car from the Onohara IC on the Takamatsu Expressway |
| train | Approximately 4 minutes by cab from JR Toyohama Station (2 km) |
- Onohara Tumulus Group
- glossary
○Wankashizuka burial mound
Location: Behind the main shrine of Onohara Hachiman Shrine
○Iwakurazuka burial mound
Location: On the grounds of Jiunji Temple
○Hiratsuka burial mound
Location: West side of Onohara Central Park
This is a very rare group of burial mounds in Japan, with four burial mounds with horizontal stone chambers, the largest or the largest in Shikoku, located within a 700-meter diameter area.
Round burial mound: An ancient burial mound with a circular mound
Houfun: An ancient burial mound with a square-shaped mound
Tomb mound: A mound built of earth and pebbles.
Moat: A moat dug around a burial mound.
Enjodo: a passageway leading to the outside of the tomb.
Stone chamber: A tomb chamber piled up with natural or processed stones.
Genshitsu: a room in which the remains of the deceased were placed.
Sue ware: Ceramic earthenware produced in Japan between the Kofun and Heian periods.
Granite: Relatively coarse-grained rock composed mainly of quartz and feldspar.
