Guida
The Irie-Takasago Shell Mound is an archaeological site located in Toyako Town, Abuta District, Hokkaido, dating from the late Pre-ceramic/Early Jomon to the middle of the Late Jomon period (approximately 3,500 BC to 800 BC). It was designated as a National Historic Site in 1988 and was inscribed as a UNESCO World Heritage site in 2021 as part of the 'Jomon Prehistoric Sites in Northern Japan.' Situated on a plateau at an elevation of 10 to 20 meters overlooking Uchiura Bay, it is an extremely important archaeological asset that illustrates how ancient people utilized the resources of the sea and mountains.
This site preserves the form of settlements during the sedentary lifestyle of the Jomon period. The settlement consists of residential areas with pit dwellings and burial areas with pit graves. The excavated artifacts reveal the advanced technological skills and social structures of the time. For instance, the discovery of shells such as clams and mussels, alongside fish bones from species like herring, rockfish, sea bass, and even tuna, as well as bones from deer and dolphins, proves that fishing and hunting were highly developed. Furthermore, the discovery of ornaments made from wild boar tusks and shell bracelets made from species not native to Hokkaido suggests active-trade and cultural exchange with other regions.
The most striking feature of the site is the exposed shell layers and the diverse artifacts that tell the story of ancient life. Bone tools, such as fish hooks and harpoons, have been discovered within the shell mounds, allowing visitors to feel the evolution of ancient technology. Notably, human remains of an adult male suffering from muscular atrophy were found in the burial area. This discovery is a crucial piece of evidence suggesting that even in the Jomon period, there was a system of long-term, dedicated care for individuals with illnesses or disabilities, reflecting a sophisticated level of social empathy and community structure.
Because the site is located on an open plateau overlooking Uchiura Bay, it offers different scenic views depending on the season. On clear days, the stunning view of the bay provides a perfect backdrop to imagine the ancient landscape. At the 'Irie-Takasago Shell Mound Museum,' visitors can deepen their understanding of how the environment and natural resource utilization changed across different seasons through detailed exhibits.
At the Irie-Takasago Shell Mound Museum, you can learn about Jomon life through the display of actual artifacts and the exposed shell layers. The intricate craftsmanship of items like the wild boar tooth ornaments demonstrates the high level of artistic skill of the era. The facility also allows you to observe the structure of the shell mounds up close, providing a direct connection to archaeological study.
The site is nestled within the beautiful natural environment of Toyako Town. The surrounding area offers expansive views of Uchiura Bay, making it a perfect route to combine a historical exploration with the natural beauty of Hokkaido. Since there are many other tourist attractions around Lake Toya, you can easily plan a trip that blends history and nature.
The area around the ruins is a natural environment on a plateau. We recommend wearing comfortable walking shoes. Please follow the rules to protect the exhibits and the site.