Law 4,503 of January 2, 1991, transformed the reserve into Pedra Azul State Park, with an area of 1,240 hectares.

The predominant biome of this Brazilian conservation unit is dense antimontane rainforest.

[1] The Pedra Azul State Park was created in 1991 to protect the natural heritage of the region, and in particular the Pedra Azul (Blue Stone), a granite rock formation reaching a height of 1,822 metres (5,978 ft).

The park covers parts of the municipalities of Domingos Martins and Vargem Alta.

[2] It became part of the Central Atlantic Forest Ecological Corridor, created in 2002.