Excavations in Kyushu have led to the discovery of a specialized foundry used for the production of dotaku—ornate bronze bells—during the late Yayoi period. Unlike bells used for sound, these dotaku were buried in hillside caches as part of communal agricultural rituals to ensure a bountiful rice harvest. The foundry site includes intact molds featuring scenes of daily life, hunting, and what appears to be a shamanistic dance festival involving stilt-walkers.
The scale of the workshop suggests that bell-making was a centralized, highly regulated activity tied to a regional festival calendar. Analysis of the clay molds has provided new insights into the metallurgical techniques of the era, while the imagery on the bells confirms the importance of communal dancing in early Japanese spiritual life. This find reinforces the theory that these bronze objects were the primary ritual currency for early agricultural societies in Japan.