Vale do Codó

Vale do Codó State Park (Parque Estadual do Vale do Codó) protects about 760 hectares of Campos Gerais landscape in the municipality of Jaguariaíva, in eastern Paraná, Brazil. ^[1] Created in 2007 and managed by the Instituto Água e Terra (IAT), the park is defined by its dramatic canyons, carved into Furnas Formation sandstone, together with native grasslands, waterfalls and patches of Araucaria forest. Rivers cutting through the plateau have formed steep-walled gorges and scenic falls such as the Cachoeira do Véu da Noiva, making the park a striking example of the Campos Gerais canyon country. Rather than a dense Atlantic Forest river valley, Vale do Codó showcases open highland fields, rupestrian vegetation and sandstone outcrops, offering visitors a landscape of canyons, waterfalls and grasslands typical of Paraná's Second Plateau. ^[2]

The park's mix of grasslands, canyons, watercourses and forest patches supports fauna characteristic of the Campos Gerais. A notable feature is its diverse fish community, with numerous species such as catfish, cará, mandi and lambari inhabiting the rivers that thread the park. Birds are abundant, including grassland and forest species as well as raptors and swifts that nest and hunt around the canyon walls. Mammals of the region, such as foxes, small cats, deer and armadillos, move between the open fields and forested gullies, while amphibians and reptiles occupy the moist gorge environments and streams. ^[1] The sheltered canyons and humid depressions create microhabitats distinct from the exposed grasslands. As a protected fragment of native Campos Gerais habitat, the park is a valuable refuge for local wildlife.

Vegetation at Vale do Codó reflects the Campos Gerais rather than dense rainforest, comprising native grasslands (campos), rupestrian fields on rocky ground, Cerrado-associated ecosystems and remnants of Mixed Ombrophilous (Araucaria) Forest. ^[1] The open campos are dominated by native grasses and herbaceous plants adapted to sandy soils and seasonal conditions, while rupestrian vegetation clings to sandstone outcrops and canyon rims. Along the rivers and within the sheltered gorges, gallery and Araucaria forest patches provide moister, shaded habitat. This mosaic of grassland, rocky field, savanna and forest supports considerable plant diversity and preserves a representative sample of the Second Plateau's natural vegetation. The interplay of open fields and forested canyons gives the park its distinctive botanical character and scenic contrasts.

The park's landscape is shaped by the Furnas Formation, a sandstone unit of Devonian age that outcrops across Paraná's Second Plateau on the eastern edge of the Paraná Basin. ^[1] Rivers such as the Codó and Lajeado Grande have cut down through these quartzose sandstones to form canyons with abrupt, near-vertical walls, the Lajeado Grande canyon extending approximately 450 metres in length with tens of metres of vertical relief. Differential erosion of the sandstone has produced cliffs, ledges and rock shelters, while waterfalls plunge where watercourses meet resistant rock. The pale, medium-to-coarse-grained Furnas sandstones give the canyons their characteristic form and colour. This canyon-and-grassland topography is a defining feature of the Campos Gerais and makes Vale do Codó a compelling site for appreciating the region's sedimentary geology. ^[2]

Vale do Codó has a humid subtropical highland climate typical of Paraná's Second Plateau. Summers are warm and wet, while winters are cool, with cold nights and the possibility of frost on the exposed grasslands. Rainfall is fairly well distributed through the year and sustains the rivers and waterfalls that define the park, with heavier precipitation generally in the warmer months. Mist can gather in the canyons and over the fields, especially in the cooler season. The moderate temperatures make the park pleasant to visit for much of the year, though visitors should be prepared for changeable weather and cooler conditions at higher, exposed points. These seasonal patterns influence river flow and the appearance of the park's canyons and falls.

The Campos Gerais region around Jaguariaíva has long been part of Paraná's ranching and frontier history, with its open grasslands used historically for cattle grazing and as routes across the plateau. Indigenous peoples inhabited the region before European settlement, and the canyons and rock shelters of the area hold potential archaeological interest. Jaguariaíva developed as a town within this pastoral landscape, later influenced by railways and regional agriculture. The scenic canyons and waterfalls of the Codó valley attracted local visitors and gained recognition for their natural beauty, prompting interest in their protection. Creation of the state park reflected a growing appreciation of the Campos Gerais's distinctive canyon landscapes and the value of conserving representative native grasslands near a populated agricultural region. ^[1]

Parque Estadual do Vale do Codó was created on October 2, 2007, by Paraná State Decree No. 1,528, to protect the canyons, waterfalls, native grasslands and associated ecosystems of the Codó valley near Jaguariaíva. ^[1] Covering about 760 hectares, it is managed by the Instituto Água e Terra (IAT). Its establishment secured formal protection for a scenic and ecologically representative section of the Campos Gerais, safeguarding Furnas sandstone canyons and their surrounding fields and forest patches. The park adds to Paraná's network of protected areas conserving the distinctive landscapes of the Second Plateau. Since its creation, management has focused on conserving the park's fragile canyon environments and grasslands while developing visitor infrastructure, including improvements to the reception centre to support education and controlled public access.

Vale do Codó's main attractions are its canyons and waterfalls set among open Campos Gerais grasslands. Trails lead visitors to viewpoints over the steep-walled sandstone gorges cut by the Codó and Lajeado Grande rivers, and to scenic falls including the Cachoeira do Véu da Noiva, the Cachoeira do Lago Azul and the Cachoeira das Andorinhas. ^[1] Walking routes pass through native fields, rupestrian vegetation and forest patches, revealing the contrast between open highland and shaded canyon environments. The dramatic gorge scenery, clear rivers and waterfalls make the park a rewarding destination for hiking, photography and nature observation. Because the landscape is defined by cliffs and watercourses, many highlights are experienced from trail viewpoints and along the rivers rather than through developed attractions.

The park lies close to Jaguariaíva, roughly 8 kilometres from town, in the Campos Gerais of eastern Paraná, and is reached by regional roads. ^[1] A reception centre supports visitor access, and the IAT has invested in improving on-site infrastructure to serve education and controlled tourism. Facilities focus on trails and viewpoints for appreciating the canyons and waterfalls rather than extensive tourist amenities, so visitors should bring water, suitable footwear and sun protection for the open grassland terrain. Jaguariaíva and nearby towns provide accommodation and services. Given the presence of cliffs and canyons, visitors should keep to marked trails and follow safety guidance. Checking current access conditions with the park administration is advisable before planning a visit.

Vale do Codó conserves a distinctive Campos Gerais landscape of Furnas sandstone canyons, native grasslands, rupestrian fields and Araucaria forest patches, protecting an ecologically representative sample of Paraná's Second Plateau. ^[1] Managed by the Instituto Água e Terra (IAT), the park safeguards fragile canyon ecosystems, waterways and the fish and wildlife communities that depend on them, while conserving grassland habitats that are increasingly rare in an agricultural region. Conservation priorities include protecting the sensitive canyon walls and rupestrian vegetation from erosion and disturbance, managing controlled visitation, and maintaining water quality in the rivers that shape the park. By preserving this canyon-and-grassland landscape, the park contributes to regional biodiversity conservation, scenic and geological heritage, and environmental education about the Campos Gerais.