Flagship tour · departures Tuesday to Sunday
A Day at the Janelão
Spend the day inside one of Brazil’s largest walk-in caves: the Gruta do Janelão, home to the world’s largest stalactite and the skylights that light up at midday. Accredited guide, hotel pickup and a small group — the way people born in the Valley have done it since 1997.
What the Gruta do Janelão is
The stone cathedral of the Peruaçu Valley
The Janelão is the postcard of Cavernas do Peruaçu National Park, in northern Minas Gerais. Its chambers reach 100 meters high, and the great openings in the ceiling — the skylights — let in beams of light that, around midday, illuminate the world’s largest stalactite, nearly 30 meters tall. It’s one of the most impressive cave landscapes on the planet.
We set out early, enter the Park before the heat and before the other groups, and you experience the Janelão in silence, with time to take photos and feel the scale of the place. All with an ICMBio-accredited guide, mandatory to enter the Park. Departures run Tuesday to Sunday, subject to availability — just ask about the date you prefer.
How to book
Your spot in three steps
- Pick your date in the booking calendar — the dates shown are the ones with real availability.
- Complete the booking online and get instant confirmation by email. Prefer to talk first? We are on WhatsApp.
- The day before, you receive the pickup time, the packing list and the weather forecast.
Want to see the full day, the schedule and the other itinerary options? See the Day at the Janelão itinerary on the tours page.
Online booking · live availability
Pick your date and book
Departures every Saturday, small groups of up to 8 people. The calendar below shows the dates with real availability in our booking system — choose the date, set the number of travellers and confirm instantly. Rather talk first? Message us on WhatsApp.
Questions about the Janelão tour
What’s the best time to see the light in the skylights?
Around midday. That’s when the sun is directly overhead and the beams of light pour down through the skylights onto the world’s largest stalactite. Our itinerary reaches the Janelão at exactly this time so you can see the scene at its peak.
How demanding is it?
It’s the most demanding itinerary we offer: it combines Gruta Rezar (2.4 km, strenuous) and Gruta do Janelão (4.8 km, moderately strenuous), with rocky stretches and natural steps. We recommend closed shoes with grippy soles and good fitness.
Do I need a guide? Is lunch included?
Yes to both. The ICMBio-accredited guide is mandatory and already included, as is the regional lunch, transport with hotel pickup and the safety equipment. You only bring your own water and snacks for the trail.
Which days do tours run?
Tours run Tuesday to Sunday, subject to availability — we’re closed only on Mondays. Ask about the date you prefer on WhatsApp and we’ll confirm the spot with ICMBio. Want a private tour? We can build it as a tailor-made itinerary for your group.
Shall we set up your day at the Janelão?
Small groups, departures Tuesday to Sunday subject to availability. Talk to people born in the Valley and secure your spot ahead of time — no strings attached.