| No. | 57 |
| Description | Fork-shaped wooden artifact |
| Site | Oshima 2 Site: on the floor of Pit House 2 |
| Size (cm) | L. 20.7 |
| Period | Late to Final Satsumon |
| Date | 11-13th century |
| Possessor | Tokoro Research Laboratory |
| Comment | A carbonized wooden artifact that has a forked shape. Four tines are preserved, but the left part is damaged, and it seems to have had more than six tines. This kind of artifact is not evident in the Satsumon culture, and its purpose of use is unknown. |