Tanzawa-Ōyama Prefectural Natural Park

Tanzawa-Ōyama Prefectural Natural Park (県立丹沢大山自然公園) is a Prefectural Natural Park in Kanagawa Prefecture, Japan. Established in 1960, it derives its name from the Tanzawa Mountains. The park spans the borders of the municipalities of Aikawa, Atsugi, Hadano, Isehara, Kiyokawa, Sagamihara, and Yamakita.