Sengo ruins

The Sengo ruins, located in Fujinomiya, Shizuoka, Japan, are a significant archaeological site dating back to the early through mid-Jōmon period, around 4000 BCE. Situated at the southeastern foot of Mount Fuji, the site includes the remains of a settlement featuring twenty pit dwellings arranged around a central 50-meter plaza. These dwellings, varying in size from three to 7.3 meters in diameter, suggest a community of considerable size. The presence of overlapping foundations indicates a history of rebuilding over time. The discovery of Jōmon pottery shards and surrounding stone circles further enhances the site's importance in understanding the cultural practices of the Jōmon period. The site's preservation under volcanic ash from Mount Fuji's eruptions provides a unique window into the prehistoric life and environmental conditions of ancient Japan.