Bungo Suidō Prefectural Natural Park

Bungo Suidō Prefectural Natural Park (豊後水道県立自然公園) is a Prefectural Natural Park on the east coast of Ōita Prefecture, Japan. Established in 1985, the park spans the municipalities of Saiki, Tsukumi, and Usuki. The park's central focus is upon the Bungo Strait.