Sete Salões

Parque Estadual Sete Salões is a protected area in the Rio Doce Valley region of Minas Gerais, notable for its spectacular quartzite rock formations that give the park its name — 'Seven Rooms' or 'Seven Halls,' referring to the cavern-like chambers formed by the distinctive geological structures. Located in a region of the Atlantic Forest affected by centuries of deforestation, the park conserves both the remarkable geological landscape and the recovering forest cover that cloaks the quartzite massif. The Rio Doce watershed context gives Sete Salões additional environmental significance as part of a basin that suffered severe ecological disruption from the 2015 Samarco tailings dam disaster.

Sete Salões supports Atlantic Forest wildlife communities in various stages of recovery, with species diversity reflecting both the park's forest quality and its connectivity to other habitat patches in the Rio Doce Valley region. Peccaries, capybaras near water sources, and a range of rodents and marsupials represent the mammal fauna. Ocelots and pumas occur as top predators. The birdlife benefits from the forest cover on the quartzite massif, with raptors including black-and-chestnut eagles soaring over the rocky formations and forest-interior species occupying the sheltered ravines. The rocky substrate of the quartzite formations provides nesting habitat for swifts and specific raptor species that favour rocky cliff faces. Amphibian communities in streams within the park include species sensitive to water quality.

The vegetation of Sete Salões is characterised by Atlantic Forest on the lower and mid-slopes of the quartzite massif, with rupestrian (rocky outcrop) vegetation on the exposed quartzite surfaces. The rupestrian flora is specialised and includes endemic bromeliads, cacti, orchids, and vascular plants adapted to the thin soils, high insolation, and periodic drought of exposed rock faces. Where soils accumulate in rock crevices and sheltered positions, denser shrub and tree vegetation develops, creating complex habitat mosaics across the rock surface. The forest in ravines and on moister slopes is multi-layered and rich in epiphytes. The combination of forest and rupestrian vegetation creates unusually high plant diversity for the size of the reserve.

The geological foundation of Sete Salões is formed by Proterozoic quartzite belonging to the Espinhaço Supergroup — the same geological system that forms the dramatic rocky landscapes of the Chapada Diamantina in Bahia and the Serra do Espinhaço in Minas Gerais. The quartzite is highly resistant to chemical weathering and forms the distinctive chamber-like formations that give the park its name, created by differential erosion along joint and fracture planes in the rock. Iron-rich layers within the quartzite create ferruginous soil patches supporting campo ferruginoso vegetation. The quartzite outcrops sit within a broader landscape of Precambrian metamorphic and crystalline basement rocks of the São Francisco Craton.

Sete Salões experiences a seasonally dry tropical climate typical of the interior Rio Doce Valley region of Minas Gerais. Annual precipitation ranges from approximately 1,000 to 1,400 millimetres, concentrated in the summer wet season from October to March. The dry season from May to September is pronounced, with several months receiving minimal rainfall and the landscape experiencing significant moisture stress. Temperatures are warm throughout the year, with means between 20 and 25 degrees Celsius, though the quartzite rock formations can create temperature extremes on exposed surfaces during peak summer insolation. The seasonal pattern strongly influences the phenology of vegetation and the activity patterns of wildlife within the park.

The Rio Doce Valley has been inhabited since prehistoric times, and rock art associated with indigenous cultures has been documented in rockshelters across the region. The valley served as a major route of colonial expansion into the interior of Minas Gerais, and the surrounding area was progressively cleared for agriculture, cattle ranching, and iron ore smelting from the eighteenth century onward. The quartzite formations of Sete Salões, while resistant to agricultural conversion, were subjected to selective timber extraction and charcoal production that reduced forest cover across the region. The Rio Doce watershed has been profoundly affected by iron ore mining and the 2015 Samarco tailings dam failure, which released hundreds of millions of cubic metres of mining waste into the river system.

Sete Salões was established as a state park in Minas Gerais to protect its distinctive quartzite geological formations and associated biodiversity, and to contribute to ecological recovery in the heavily impacted Rio Doce Valley. The park's establishment reflected growing recognition of the value of geological and biological heritage in the region and the importance of protected areas as refugia for wildlife in a landscape dominated by agriculture and mining. Management by IEF has focused on controlling illegal access, preventing fires, and monitoring the recovery of forest vegetation within the park boundary. The reserve has gained additional prominence in the context of the Renova Foundation's environmental restoration programme following the 2015 Samarco disaster.

The quartzite formations of Sete Salões are the primary attraction, offering visitors an unusual geological landscape of rocky chambers, narrow passages, and exposed cliff faces rising above the surrounding forest. The formations provide natural viewpoints across the Rio Doce Valley landscape. Trails access both the rocky outcrops — with their specialised rupestrian flora — and the sheltered forest zones in ravines, offering contrasting environments within a compact area. Birdwatching on and around the quartzite formations rewards visitors with sightings of cliff-nesting raptors, swifts, and a diversity of Atlantic Forest birds. The combination of geological interest and ecological value makes Sete Salões a distinctive ecotourism destination.

Sete Salões is accessible by road from regional towns in the Rio Doce Valley area. Visitor facilities include trail access and park administration, with IEF staff managing entry and providing basic visitor orientation. The park's location in the Rio Doce Valley means that regional infrastructure including accommodation and supplies is available in nearby municipalities. Visitors are advised to contact IEF in advance to confirm access conditions and any requirements for entry. The rocky terrain requires sturdy footwear, and visitors to the formations should be prepared for exposed conditions with limited shade on the quartzite surfaces.

Conservation at Sete Salões intersects with the broader restoration challenge posed by the Samarco mining disaster in the Rio Doce basin. The park serves as a reference ecosystem for monitoring the ecological recovery of the watershed and as a source of seeds and propagules for active restoration projects in the surrounding landscape. Fire prevention is a critical management priority given the vulnerability of recovering forest vegetation during the dry season. Research on rupestrian ecology and quartzite biodiversity contributes scientific value to the reserve, and partnerships with universities and NGOs active in Rio Doce restoration support both conservation and outreach activities.