Reserva Biológica União wilderness guide
Biological Reserve · RJ

Reserva Biológica União

Reserva Biológica União is a protected biological reserve in Rio de Janeiro, Brazil, known for its exceptional Atlantic Forest biodiversity and strict conservation measures that limit public access.

Biological Reserve24,000

Designation

Biological Reserve

Total Wilderness Area

24,000

Elevation / Terrain

Diverse Wilderness

Field Editorial Guide

About Reserva Biológica União

Reserva Biológica União is a protected biological reserve in Rio de Janeiro, Brazil, known for its exceptional Atlantic Forest biodiversity and strict conservation measures that limit public access.

Wilderness Landscape & Natural Heritage

Reserva Biológica União, located in the state of Rio de Janeiro, Brazil, covers a significant portion of the Atlantic Forest biome, one of the most biodiverse and endangered forest ecosystems in the world. Established in 1998 through the merger of two previously existing conservation units, it represents one of the largest protected forest areas in the region. The reserve encompasses dense tropical rainforest, mountainous terrain, and several freshwater sources, providing critical habitat for numerous endemic and threatened species. Due to its classification as a biological reserve, public access is highly restricted, focusing primarily on scientific research and environmental monitoring. This limits recreational usage but enhances the effectiveness of habitat protection efforts. The area plays a key role in preserving rare species such as the golden lion tamarin and the red-billed curassow, along with a variety of orchids, butterflies, and amphibians. Its terrain offers steep slopes and valleys that contribute to the isolation and conservation of these habitats. While recreational activities like hiking and camping are generally prohibited, localized low-impact environmental education programs may be allowed under strict supervision. The reserve is an important reference for ecological studies and environmental preservation in the Atlantic Forest region. Visitors interested in the reserve usually engage with nearby ecological parks or visit surrounding communities to learn about local conservation efforts and enjoy the regional biodiversity through guided tours outside the reserve boundaries.

Field Guide · Biological Reserve
Adventure Destinations

Notable Destinations Near Reserva Biológica União

Scenic viewpoints, outdoor landmarks, and notable points of interest within 60 miles.

Key Wilderness Highlights

✦ Significant remnant of Atlantic Forest ecosystem with exceptional biodiversity✦ Habitat for endangered species such as the golden lion tamarin✦ Important refuge for threatened bird species like the red-billed curassow✦ Freshwater streams supporting aquatic species and pristine watershed
Wilderness Recreation

Outdoor Adventures in Reserva Biológica União

Explore curated guides for top outdoor sports, trail networks, and wilderness activities.

Park Recreation

Wildlife Viewing

Available in Reserva Biológica União
Park Recreation

Scientific Research

Available in Reserva Biológica União
Park Recreation

Environmental Education

Available in Reserva Biológica União
Park Recreation

Bird Watching

Available in Reserva Biológica União
Park Recreation

Photography

Available in Reserva Biológica União
The Ranger Station

Visitor Logistics & Essential Planning

Everything you need to know about entrance passes, seasons, visitor centers, road transit, and wildlife safety in Reserva Biológica União.

Passes & Fees

Entrance Requirements & Interagency Passes

Strictly controlled; entry permitted only for authorized scientific researchers and monitoring personnel.

Wilderness Checklist

Carry paper topographic map & compass in remote zones.
Store all food and scented items in approved bear canisters.
Check wildfire / smoke advisories before backcountry departure.
Pack out everything you pack in (Leave No Trace).
Adventure Basecamps

Gateway Towns Near Reserva Biológica União

Stay, dine, and gear up in these mountain towns and scenic basecamps surrounding the park.

Angra dos Reis, Rio de Janeiro
⌖ 7.85 miles
Gateway Basecamp

Angra dos Reis, Rio de Janeiro

Angra dos Reis offers a stunning mix of coastal adventure and natural beauty, where island hopping, snorkeling, and hiking abound. Explore its hidden coves and lush forests for an unforgettable getaway.

December to March
Explore Town
Mangaratiba, Rio de Janeiro
⌖ 19.97 miles
Gateway Basecamp

Mangaratiba, Rio de Janeiro

Mangaratiba is a tranquil coastal town in Rio de Janeiro offering hiking in lush Atlantic Forest, kayaking through calm bays, and access to pristine beaches. Ideal for travelers seeking outdoor adventures away from busy city centers.

April to October
Explore Town
São José do Barreiro, SP
⌖ 22.77 miles
Gateway Basecamp

São José do Barreiro, SP

São José do Barreiro is your portal to outdoor excitement in Serra da Bocaina. From hiking scenic trails to cooling off at stunning waterfalls, this town promises adventure and tranquility in equal measure.

Winter and Spring
Explore Town
Nkwanta, Volta
⌖ 30.08 miles
Gateway Basecamp

Nkwanta, Volta

Nkwanta in the Volta Region is an adventurer’s paradise offering rich cultural experiences, hiking trails, and abundant wildlife. Explore its breathtaking terrains and serene landscapes with local guidance.

November to March
Explore Town
Resende, Rio de Janeiro
⌖ 30.45 miles
Gateway Basecamp

Resende, Rio de Janeiro

Resende blends lush Atlantic Forest, mountains, and rivers to offer excellent hiking, biking, kayaking, and climbing. Discover waterfalls, protected parks, and wildlife in a friendly town perfect for outdoor explorers.

April to September (dry season)
Explore Town
Itatiaia, RJ
⌖ 30.89 miles
Gateway Basecamp

Itatiaia, RJ

Itatiaia, RJ offers thrilling adventures in Brazil's first national park. Hike, climb, and observe rich biodiversity in stunning landscapes with jagged peaks and lush forests.

Spring and Fall
Explore Town