Ōtone Prefectural Natural Park

Ōtone Prefectural Natural Park (県立大利根自然公園) is a Prefectural Natural Park in northern Chiba Prefecture, Japan. First designated for protection in 1935, the park's central feature is the Tone River. The park spans the municipalities of Katori and Kōzaki. The giant camphor trees at Kōzaki Jinja (神崎神社) are a Natural Monument.