Gruta

Caverna Lapa do Penhasco

Verified

A cave at the end of a blind valley in Mambaí, with the main entrance opening at the base of a rock cliff — the "penhasco" that gives the place its name — crowned by a giant natural window. Right at the mouth there's a small lake you cross through the water (chest-high in the rains) and, inside, waterfalls, a second lake, and rare speleothems in good-sized chambers. It's on the Barro Preto and Olho d'Água farms, within the APA Nascentes do Rio Vermelho.

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Drop

0.7 km

Trail (round trip)

Moderate

Difficulty

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Entry

Before you go

Visits only with an accredited local guide — the cave is on private property (Barro Preto and Olho d'Água farms) and within the APA Nascentes do Rio Vermelho. Operated by Mambaí agencies such as Mambaí Adventure and Cerrado Aventura. Some operations offer a zipline over the natural window.
Best in the dry season (May–September). In the rainy season the interior floods, the entrance-lake crossing gets deep (chest-high), and full exploration is limited; flash-flood risk.

Where to arrange a guide

Parque Estadual de Terra Ronca (PETeR) — condutor credenciado obrigatório nas cavernas · sede (62) 3439-6005 · peter.meioambiente@goias.gov.br (região com pouco sinal — respostas demoram)

How to get there

PavedAny car makes it.

From São Domingos120 km

Google Maps Waze

Approximate pin — confirm access with a local guide before driving out there.

The trail

0.7 km

Distance

3 h

Time

Moderate

Level

From the parking area, ~250 m of trail across pasture to the edge of the blind valley, followed by a short, steep ~80 m descent with loose rocks. Inside the cave, the standard route is ~380–400 m and the full traverse reaches ~1.4 km, with stretches requiring contact with the water. Swimwear, closed footwear, and a headlamp recommended.

The water & the river

DarkClarity 3/5Low flow

River: Córrego das Dores e Rio Vermelho

Ratings

Beleza

Trilha

Lotação

Acesso

Scored 1 to 5. Beauty is subjective — so we split it into axes, letting you sort by what matters to you.

Planning your visit

Caverna Lapa do Penhasco is about 120 km by road from São Domingos; access is by paved road; the trail is 0.7 km round trip, moderate level, around 3 h.

The visit requires a local guide: visits only with an accredited local guide — the cave is on private property (Barro Preto and Olho d'Água farms) and within the APA Nascentes do Rio Vermelho. Operated by Mambaí agencies such as Mambaí Adventure and Cerrado Aventura. Some operations offer a zipline over the natural window.

Do I need a guide?: Visits only with an accredited local guide — the cave is on private property (Barro Preto and Olho d'Água farms) and within the APA Nascentes do Rio Vermelho. Operated by Mambaí agencies such as Mambaí Adventure and Cerrado Aventura. Some operations offer a zipline over the natural window.
How much is entry?: The price hasn't been confirmed by Atlas Veadeiros yet — ask at the town's tourist office.
Can I go in a regular car?: Yes — paved road.
When to go?: Best in the dry season (May–September). In the rainy season the interior floods, the entrance-lake crossing gets deep (chest-high), and full exploration is limited; flash-flood risk.