It is located at the border between the states of Rio de Janeiro and São Paulo in southeastern Brazil.

Created by Federal Decree in 1971, the park comprises an area of approximately 104,000 hectares (260,000 acres) and a significant biodiversity.

Among the fauna of the park are cats, sloths, deer, monkeys, snakes and birds.

A number of amphibians are only known from the park and its buffer area: Brachycephalus vertebralis, Ischnocnema pusilla, Bokermannohyla ahenea, Bokermannohyla clepsydra, Scinax ariadne, Megaelosia bocainensis, Physalaemus barrioi, and Paratelmatobius gaigeae.

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