Campina do Encantado

Campina do Encantado State Park (Parque Estadual da Campina do Encantado) is an Atlantic Forest reserve of roughly 3,200 hectares located entirely within the municipality of Pariquera-Açu, in the Ribeira Valley (Vale do Ribeira) of southern São Paulo state, Brazil. ^[1] It protects a low-lying coastal plain of restinga forest, swamp forest, and seasonally flooded várzea, together with the peat bogs that give the park its name. 'Campina do Encantado' — the Enchanted Field — refers to a striking natural phenomenon: thick peat deposits accumulate methane gas that, when released and ignited, produces flames rising up to about 80 centimeters from the ground. The park was created on 16 August 1994 as Pariquera-Abaixo State Park (Decreto No. 8,873) and renamed in 1999, and it is administered by the São Paulo State Forest Foundation (Fundação Florestal).

The park's lowland forests, swamps, and peatlands support a diverse fauna typical of the Ribeira Valley Atlantic Forest. The globally threatened red-tailed amazon (Amazona brasiliensis), a parrot restricted to the coastal Atlantic Forest of São Paulo and Paraná, is among its notable birds, and more than two hundred bird species have been documented in and around the park. ^[1] Mammals include forest primates such as howler monkeys and capuchins, along with wild cats such as ocelot and, in the wider region, puma. The seasonally flooded and wetland habitats are important for species dependent on standing water, while the peat bog and its saturated soils sustain specialized invertebrate communities adapted to waterlogged, methane-rich conditions found in few other places.

The dominant vegetation is a mosaic of restinga forest, swamp forest, and seasonally flooded várzea forest characteristic of the coastal plain of the Ribeira Valley, rather than the taller montane rainforest of the nearby Serra do Mar. ^[1] These lowland formations are rich in bromeliads and aroids that thrive in the humid, poorly drained environment, and palms such as the juçara (Euterpe edulis) are prominent in wetter sectors. The peatland areas support specialized bog vegetation tolerant of permanently saturated, anaerobic soils. Orchids, ferns, and other epiphytes are abundant throughout the forest. The park's low, flat terrain and high water table produce a distinctive flora quite different from the surrounding hill forests, adding to the biological importance of the Ribeira Valley mosaic.

Campina do Encantado occupies the flat, low-lying coastal plain near the mouth of the Ribeira de Iguape basin, where Quaternary sediments — marine and fluvial sands, silts, and clays — form the poorly drained lowland. The park's most distinctive geological feature is its thick peat deposits, formed over thousands of years by the accumulation of organic matter in a former marine-lagoon environment. As this organic material decomposes under waterlogged, oxygen-poor conditions, it generates methane gas, which can be released and ignited to produce the park's famous flames. ^[1] Beyond the plain, the broader Ribeira Valley includes ancient crystalline and metasedimentary rocks and extensive limestone karst, but within the park itself the geology is dominated by these young, water-saturated coastal sediments.

The Ribeira Valley has a humid tropical climate with high rainfall and no pronounced dry season, sustained by the maritime influence of the nearby Atlantic coast. Annual precipitation is high, commonly ranging around 1,500 to 2,000 millimeters or more, and humidity remains elevated throughout the year. Temperatures are warm, averaging in the low to mid-20s Celsius, with hot, wet summers and milder winters. The abundant, well-distributed moisture keeps the coastal plain's soils saturated for much of the year, maintaining the swamps, várzea, and peat bogs that define the park. This consistently humid climate underlies the structural complexity and biological richness of the lowland Atlantic Forest here.

The Ribeira Valley has a cultural history that sets it apart from the rest of São Paulo state. Its rugged terrain and difficult access left the region economically marginal even during Brazil's coffee boom, and as a result it preserved one of the largest concentrations of quilombo communities in the country — settlements founded by descendants of formerly enslaved Africans who established free communities in the forest. Guarani indigenous groups, particularly the Mbyá, also maintain a presence in the broader landscape. Around Pariquera-Açu, small-scale agriculture and traditional land use shaped the surrounding countryside. This blend of quilombola, indigenous, and caboclo heritage makes the Ribeira Valley one of Brazil's most significant living cultural landscapes, giving conservation here a strong social dimension.

The park was created on 16 August 1994 as Pariquera-Abaixo State Park (Decreto No. 8,873) to protect the flooded lowland Atlantic Forest and peatlands of the coastal plain around Pariquera-Açu. ^[1] In 1999 it was renamed Campina do Encantado State Park, following a public consultation with local schools and communities, a name that references the 'enchanted' methane flames produced by its peat bogs and recognizes the area's distinctive natural phenomenon. Managed by the São Paulo State Forest Foundation (Fundação Florestal), the park forms part of the extensive network of protected areas in the Ribeira Valley, the largest remaining block of Atlantic Forest in Brazil. Its establishment helped safeguard a type of low-lying coastal-plain forest that is comparatively rare within the state's protected-area system.

The park's signature attraction is its peatland and the natural methane flames that give it its name, a phenomenon that can be demonstrated by releasing and igniting gas from the saturated peat. Its intact lowland Atlantic Forest also makes it a rewarding destination for birdwatchers, including those seeking the rare red-tailed amazon. Visitor use is managed by the Fundação Florestal and centered on environmental education, guided nature observation, and interpretation of the peat-bog phenomenon rather than on extensive recreational trail networks. The surrounding Ribeira Valley offers complementary attractions, from the great limestone caves and karst landscapes of the region to quilombo cultural visits, situating the park within a broader ecotourism circuit.

The park lies about 15 kilometers from the town of Pariquera-Açu, which is reached from São Paulo or Curitiba via the BR-116 (Régis Bittencourt Highway) and offers hotels, restaurants, and basic services. ^[1] Access to the park is coordinated through the Fundação Florestal, open Tuesday through Sunday from 8:00 to 17:00, and visits — especially those featuring the peatland flames and birdwatching — are generally arranged in advance and led by park staff or educators. There is a park administration presence but limited developed tourist infrastructure. Some roads within the valley are unpaved, and the broader Ribeira Valley ecotourism circuit provides useful context for planning trips that combine the park with other natural and cultural sites in the region.

Campina do Encantado forms part of the Ribeira Valley protected-area mosaic, the foundation of the Atlantic Forest's long-term survival in Brazil, and it protects a comparatively rare type of coastal-plain forest and peatland. Its peat bogs represent a significant store of carbon, so their drainage or disturbance would release substantial greenhouse gases, giving the park added importance in a warming climate. Threats to the area include land-use pressure at its margins, drainage, and infrastructure projects in the wider valley. Managed by the Fundação Florestal, the park supports environmental education and research, and its conservation is intertwined with the traditional quilombola and indigenous communities of the Ribeira Valley, whose territories and stewardship shape the surrounding landscape.