These ruins date back to the 1st century. Rice paddies and dwellings have been restored. Admission is free, but parking costs 400 yen.
Discovered during the war on July 10, 1943 (Showa 18), during the construction of a military factory. In 1947 (Showa 22), Japan's first comprehensive excavation, involving scholars from various fields including archaeology, anthropology, and geology, uncovered over 80,000 square meters of rice paddy fields, wells, pit-shaped dwellings, and elevated storehouses. Other finds included wooden tools for farming, hunting, and fishing, fire-making tools, and divination bones. The Yayoi settlement at Toro site chose pit-shaped dwellings over traditional dwellings for its dwellings and other structures because the site, even among low-lying marshes, had a particularly high groundwater level and gushed forth water when excavated, making the area unsuitable for pit-shaped dwellings. Re-excavation surveys were carried out as part of a five-year plan beginning in 1999, which unearthed new bronze bracelets and a lacquered koto made of a tub, as well as the remains of a large, post-hole building thought to have been a shrine. Furthermore, within the remains of what was previously thought to be a large paddy field with large ridges, it was discovered that there were smaller ridges that had not been noticed during the previous survey, indicating that it was actually a small paddy field. The site has now been developed as "Toro Park," and various buildings have been restored. The Shizuoka City Toro Museum, which houses documents related to the site, has also been built adjacent to the site.
