Gruta do Janelão: A Window to Prehistoric Art and Natural Wonder

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Explore the colossal Gruta do Janelão in Minas Gerais: a natural wonder with prehistoric art, stunning rock formations, and an underground river.

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Gruta do Janelão

Gruta do Janelão, or 'Big Window Cave,' is a colossal cave within the Cavernas do Peruaçu National Park, showcasing dramatic geological formations, an underground river, and prehistoric rock paintings dating back 10,000 years. It's a breathtaking journey through time and nature.

A brief summary to Gruta do Janelão

Januária, Levinópolis, State of Minas Gerais, 39480-000, BR

From Eve

Know before you go

Hi, I'm Eve. Here are a few practical things to know before exploring Gruta do Janelão.

Wear comfortable shoes suitable for hiking and walking on uneven surfaces within the cave and on surrounding trails.
Bring water and snacks, as the 4-hour tour can be demanding.
Visit during the early morning or late afternoon for optimal lighting and fewer crowds.
Check the weather forecast before your visit, as heavy rains can affect access to the park.

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Getting There

Driving

To reach Gruta do Janelão by car, navigate to Januária, Minas Gerais. From the city center, take the BR-365 highway east. After about 40 km, turn right onto the MG-122 and continue for 15 km to Levinópolis. Follow local signs for approximately 5 km to Gruta do Janelão. The final road may be unpaved, so a vehicle with good clearance is recommended. Parking near the visitor center is free. There are no tolls on this route.
Walking

If you are in Levinópolis, you can walk to Gruta do Janelão. The walk is approximately 5 km and should take around 1.5 to 2 hours. Follow local paths leading away from the town towards the countryside, watching for signs to the 'Gruta'. Bring water. There are no costs involved.

Discover more about Gruta do Janelão

Gruta do Janelão, located in the Cavernas do Peruaçu National Park in Minas Gerais, Brazil, is more than just a cave; it's a journey through geological history and prehistoric art. The cave, whose name translates to 'Big Window,' earns its moniker from the massive karst windows that allow sunlight to stream into its vast interior, creating a mesmerizing play of light and shadow. As the first cave in the park developed for tourism, Gruta do Janelão stretches an impressive 4,740 meters in length with a vertical range of 176 meters. The Peruaçu River flows through the cave, adding to the spectacle. Skylights illuminate small forests within the cave, creating unique ecosystems. Visitors can explore the cave via the 'Caminho da Gruta do Janelão' loop trail, a 4.8 km walk that takes approximately 4 hours. Helmets are required due to the risk of falling rocks and water droplets from the 100-meter-high ceiling. The cave also features the Sítio Ateliê Janelão, where visitors can view well-preserved rock paintings in red, black, and ochre, depicting animals and geometric patterns created by prehistoric humans some 10,000 years ago. The cave's geology is characterized by its formation within the carbonate rocks of the Sete Lagoas Formation. The cave is at a point where the ceiling may collapse to form a gorge over thousands of years.