Boca da Onça: Chasing Brazil’s Tallest Secret Waterfall from Bonito
A 156-meter plunge and an easy ecological loop from Bonito that rewards hikers with multiple cascades, swimming pools and panoramic canyon views.
You first see it before you hear it. A white ribbon of water unravels down a green amphitheater—an abrupt slash of brightness framed by cerrado trees and the copper faces of the Bodoquena Range. Standing at the canyon rim, wind lifting the fine spray, the 156-meter drop of Boca da Onça looks less like a waterfall and more like a long exhale from the landscape itself. For travelers based in Bonito—a town that made its name on crystalline rivers and careful ecotourism—this is the day that pulls you out of caves and springs and into the vertical drama of water meeting gravity.
Trail Wisdom
Start early
Morning light and cooler temperatures make the viewpoints and swim pools more pleasant and less crowded.
Sturdy shoes, not flip-flops
Trails include uneven rock, stair sections and wet banks—closed-toe hiking shoes with good grip reduce slips.
Bring a dry bag
Protect phones and cameras—waterfall spray and sudden squalls can soak electronics in minutes.
Carry small cash
The ranch bar and the onsite facilities accept cash for snacks, tips and lockers.
Local Knowledge
Hidden Gems
- •The smaller cascades along the 4 km loop—each has its own character and quieter swimming spots
- •Gruta Mimoso cave and snorkel sites in Bonito, often paired on multi-activity itineraries
Wildlife
toucan, capybara
Conservation Note
Bonito enforces low-impact tourism rules and licensed guides; visitors are asked to stay on trails, avoid single-use plastics and support local operators who invest in habitat protection.
The name Boca da Onça means mouth of the jaguar, reflecting local indigenous and rural naming traditions; the site sits within privately managed ranchland conserved for ecotourism.
Seasonal Guide
spring
Best for: lush vegetation, birdwatching, wildflower displays
Challenges: occasional rain showers, muddy trail sections
Southern-hemisphere spring (Sept–Nov) brings regreening and active birdlife; trail conditions can vary with intermittent showers.
summer
Best for: full waterfalls, dramatic canyon runoff, lively pools
Challenges: heavy rains can make trails slippery, flashier brown water after storms
Summer (Dec–Feb) intensifies flows and spectacle, but storms and muddy conditions are more likely—check local guidance before visiting.
fall
Best for: stable weather, cleaner water, fewer tourists
Challenges: cooler mornings, some pools run lower late in season
Autumn (Mar–May) tends toward more predictable weather and fewer crowds, a solid compromise between flow and accessibility.
winter
Best for: dry-season clarity, easy hiking, pairing with aquatic tours
Challenges: lower flow may reduce dramatic spray, cooler water temperatures
Winter (Jun–Aug) is Bonito’s dry season—excellent trail conditions and visibility; waterfalls are quieter but still impressive.
Photographer's Notes
What to Bring
Sturdy hiking shoesEssential
Grip and ankle support for uneven steps, slick rocks and stair sections on the trail.
Swimwear and quick-dry towelEssential
You’ll likely swim in a plunge pool; quick-dry fabric helps on the return.
Dry bag or zip-top bagsEssential
Keep cameras, phones and spare clothes protected from spray and sudden rain.
Reusable water bottle and light snacksEssential
Hydration between viewpoints is important and saves you from buying single-use plastic.
Common Questions
How long is the Boca da Onça tour?
The on-site ecological walk is about 4 kilometers and most visits, including transfers from Bonito, take roughly 3–4 hours; full-day options exist if combined with other activities.
Is the trail family-friendly?
Yes for families with children used to short hikes; expect stair sections and some steep paths—supervise young kids closely.
Can I swim under the waterfall?
Designated plunge pools on the route are safe for swimming when permitted by guides; avoid strong currents and always follow staff instructions.
Are facilities available onsite?
Yes—the ranch provides a restaurant, bar, dressing rooms, bathrooms, a pool and hammocks for resting after the hike.
Do I need to book in advance?
Yes. Bonito manages visitor numbers for many attractions—book the Boca da Onça tour ahead, especially in peak season.
Is the site accessible for those with mobility issues?
Access is limited; the main viewpoints involve steps and uneven terrain, so mobility challenges may restrict access to certain areas.
What to Pack
Hiking shoes for traction, swimwear for plunge pools, dry bag for electronics, reusable water bottle to stay hydrated
Did You Know
Boca da Onça is the tallest waterfall in Mato Grosso do Sul at 156 meters, a fact often cited in regional ecotourism materials.
Quick Travel Tips
Book tours in advance; bring small bills for ranch purchases; arrive early to avoid heat and crowds; pack insect repellent for shaded sections
Local Flavor
Bonito’s local pousadas serve regional fish dishes and churrasco-style meats; evenings are low-key—think open-air dining, fresh river fish and conversations with guides about conservation.
Logistics Snapshot
Pickup from Bonito hotels, guided 4 km ecological loop, 11 waterfalls, 156 m main fall, 3–4 hours, ranch facilities available.
Sustainability Note
Support licensed local operators, respect trail boundaries, bring reusable containers and avoid disturbing wildlife to minimize visitor impact on this sensitive watershed.