Ōtsuka-Saikachido is an archaeological site. Located on the Shimosueyoshi Plateau in the northern suburbs of the city of Yokohama, it was discovered in 1972. The page consists of two parts. The Ōtsuka Ruins consist of the remains of a large-scale water settlement that arose around the middle of the Yayoi period, or about 2000 years ago. The adjacent ruins of Saikachido consist of a Yayoi period burial ground with square tombs. The site of Ōtsuka was extensively excavated from 1973, revealing the outline of the entire village, which covered an area of about 20,000 square meters. It was surrounded by a moat 600 meters in circumference, four meters wide and 1.5 to two meters deep.
Within this site are the foundations of at least 90 pit houses and ten stilt houses, a large quantity of Yayoi pottery, stone tools and km of charred rice have also been discovered. Based on the amount of charred rice, it is believed that the settlement was destroyed by fire.
The Saikachido site was excavated in 1972 and a total of 25 tombs were found. Despite the rarity of a complete Yayoi settlement ruin and its designation as a National Historic Site, only the eastern third of the site survived, with the remainder being destroyed by subsequent land development.
Source: Brochures, English Wikipedia entry