Serra do Voturuna, Nature reserve in Santana de Parnaíba, Brazil.

Serra do Voturuna is a nature reserve spanning four municipalities in São Paulo state, featuring diverse vegetation patterns and forested landscapes. The area offers trails through different ecological zones where visitors encounter varied plant and animal life.

The area was named by indigenous peoples of Brazil, who combined words from their language for mountain and dark in the place's name. This designation preserves the historical connection between the original inhabitants and this natural formation.

The name comes from the southern general language: votura, "mountain", plus una, "dark", giving "dark mountain"; the related form Voturana means "false hill". The range's high point, the morro do Voturuna or morro Negro in Pirapora do Bom Jesus, reaches 1,217 metres. The cachoeira do Voturuna is also part of the range.

The area has multiple entry points in Santana de Parnaíba with parking and information centers at main entrances. Bring comfortable shoes and water, especially if exploring the trails through different parts of the reserve.

The name comes from the southern general language: votura means mountain and una means dark, giving "dark mountain". The neighbouring morro do Voturana uses votura plus rana, "false", so it reads as "false hill". The two names describe different features of the same range.