North mound
| Time Period | Middle Jomon period |
| Excavation Report | |
| Excavation Report Figure No. | |
| Major Axis | |
| Explanation | Located on the west side of the north valley, it is up to 1.8 meters thick. More than 500 clay figurines have been found. |
| Time Period | Middle Jomon period |
| Excavation Report | |
| Excavation Report Figure No. | |
| Major Axis | |
| Explanation | Located on the west side of the north valley, it is up to 1.8 meters thick. More than 500 clay figurines have been found. |