is a Prefectural Natural Park in southern Nagano Prefecture, Japan. Established in 1970, the park's central feature is the Tenryū River. The park spans the borders of the municipalities of Iida, Matsukawa, Nakagawa, Ōshika, Takagi, Takamori, and Toyooka.

See also National Parks of Japan

References

External links Natural Parks in Nagano Prefecture