01 / Kashiwajima Stone Embankment (柏島石堤)
An embankment wraps the village against waves,and another runs about 310m toward the far shore.

Prefectural historic site. The prefecture's description says Nonaka Kenzan, chief administrator of Tosa Domain, built the stone embankment over about seven years from the Jōō era (1652-55). Rebuilt since, it no longer has its original form, but its scale and shape are those of the time, and stonework from Kenzan's day remains at the base.
- Kochi Prefecture Historic Site (designated January 29, 1953)
- Embankment around the village about 700m; the one extended toward the far shore about 310m (Prefectural Board of Education)
- About seven years from the Jōō era (1652-1655) (Prefectural Board of Education)
