Guida
Kasori Shell Mounds, located in Wakaba Ward, Chiba City, is one of the largest Jomon-period shell mound sites in Japan. The site features a unique 'figure-eight' shape when viewed from above, consisting of the 'Northern Shell Mound' (a 140m diameter circular formation from the mid-Jomon period) and the 'Southern Shell Mound' (a 190m long horseshoe-shaped formation from the late Jomon period). Due to its immense historical value, it was designated as a National Special Historic Site in 2017. Beyond being a mere shell mound, it served as a settled community for approximately 2,000 years (roughly 5,000 to 3,000 years ago).
This site is academically significant as a type-site for Japanese archaeology. Specifically, the 'Kasori E-style' pottery from the Northern Mound and 'Kasori B-style' pottery from the Southern Mound are crucial indicators used to determine the chronology of the Jomon period. In the 1960s, the site faced a crisis due to urban development, but a dedicated preservation movement by local citizens successfully protected the site. This movement has since become a significant part of Japan's history regarding the protection of cultural assets.
Visitors can enjoy both natural topography and archaeological discoveries. A standout feature is the facility that allows you to observe the cross-sections of the shell layers directly. There are specialized viewing areas for both the Northern and Southern mounds where you can compare the size, types, and accumulation of shells. Additionally, the site features reconstructed pit dwellings based on archaeological evidence, allowing you to step inside and experience the living space of the Jomon people.
The Kasori Shell Mounds Jomon Ruins Park is set in a lush, natural environment that changes beautifully with the seasons. The autumn months, particularly October and November, are highly recommended as the surrounding foliage is stunning and perfect for walking. Visiting during daylight hours is ideal for clearly seeing the details of the reconstructed dwellings and the shell layer cross-sections.
The park is equipped with various facilities for learning history. At the museum, you can view numerous excavated pottery pieces and tools. Depending on the season, the park may also host hands-on Jomon-themed programs, such as fire-making demonstrations. In 2023, the new facility 'Kasorie' opened, providing a comfortable space for visitors to rest or participate in educational workshops.
Kasori Shell Mounds is developed as a vast green space adjacent to residential areas in Chiba City. The well-maintained walking paths make it a valuable recreational area within the urban landscape. Other significant historical sites, such as the Tsukinoki and Arayashiki shell mounds, are also scattered around Chiba, allowing for a rich historical walking route.
Since you will be exploring outdoor ruins and reconstructed dwellings, we highly recommend wearing comfortable walking shoes. Please observe the following guidelines: