Guide
The Ofuna Site is a large-scale settlement from the late early to middle Jomon period, situated on a coastal terrace at an elevation of 30–50 meters along the Ofuna River in the Minamikabuto district of Hakodate, Hokkaido. This site serves as a key settlement-hub from the period of sedentary development approximately 5,000 to 4,000 years ago. Notable features include over 100 pit-dwelling remains, massive earthwork structures, and more than 100 burial pits. The discovery of diverse artifacts—including marine mammals, fish, and various nuts—provides a profound look into the diet and spiritual life of the ancient inhabitants. It is a precious historical asset that illustrates the transition to a settled lifestyle.
The site clearly demonstrates the settlement structure during the period when sedentary life became established in the Jomon era. Artifacts suggest a sophisticated lifestyle that skillfully utilized both the rich marine resources of the Pacific Ocean (such as whales, sea lions, tuna, salmon, and oysters) and the abundant forest resources (including chestnuts, walnuts, wild grapes, and lacquer trees). Furthermore, the presence of large-scale earthworks suggests that this location served as a spiritual center where continuous rituals and ceremonies were performed over long periods, rather than being a simple residential area. In 2001, the site was officially designated as a historical site due to its immense cultural importance.
Visitors can explore various structures that tell the story of ancient life. A particularly striking feature is the large pit-dwelling remains, some of which exceed 2 meters in depth. These structures feature deeply excavated floors and specialized small pits near the hearths, believed to be related to ritual practices. The massive earthworks also suggest the site may have functioned as a ceremonial space, such as a 'sending place' for rituals. Additionally, charred whale bones found within discarded pit dwellings provide concrete evidence of animal-related ceremonies. These findings offer a tangible connection to how ancient people interacted with natural resources and practiced their spiritual traditions.
The opening hours for the Ofuna Site and the Hakodate Jomon Culture Exchange Center vary by season. From April to October, the facility is open from 9:00 AM to 5:00 PM. From November to March, the hours are 9:00 AM to 4:30 PM. You can observe the historical remains regardless of the season. When exploring the outdoor archaeological area, please prepare appropriate clothing for the weather. During the winter months, heavy clothing and protection against the cold are essential. Visiting during daylight hours is recommended to clearly observe the topography and the structural details of the pit dwellings.
At the facility, you can learn about Jomon culture through various exhibits. The Hakodate Jomon Culture Exchange Center displays authentic artifacts such as pottery, stone tools, and bones, providing a visual understanding of ancient life. The center also offers scheduled guided explanations in Japanese (twice daily from April to October). For groups wishing to receive a more detailed or specialized explanation, it is highly recommended to make a reservation in advance.
The Ofuna Site is located along the coast of Hakodate, surrounded by the natural beauty of the Ofuna River and the Pacific Ocean. The surrounding area features other sites related to Jomon culture and scenic landscapes. The site is easily accessible by car from central Hakodate, making it a perfect addition to a sightseeing route that includes Hakodate Airport, Shin-Hakodate-Hokuto Station, or the nearby Onuma Park.
Please keep the following points in mind during your visit: