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Bonito

Gruta do Mimoso

  • Max depth40 m
  • CertificationCavern
  • Water temperature≈ 18–25 °Cestimated, no reports yet

Diving and fills

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What it looks like

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Videos and posts

From other divers, via YouTube, Instagram and Facebook. They only load when you click; after that, Google's or Meta's privacy rules apply.

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Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.

The dive

Bonito's only real cave dive, with exceptional visibility and large cone-shaped formations.

The dry air chamber above the 10 m level holds only ~10% oxygen according to the operator: do not surface there. Stay above the cones and never swim below the line.
Profile and sections

Bonito's only real cave dive, with exceptional visibility and large cone-shaped formations.

Depth and profile
Flooded limestone cave of ~120 m horizontal extent; a main tunnel with a guideline loop, the 'Salon of the Cones' with stalagmites up to ~10 m, and the side tunnel 'Catacumba' that drops below 40 m.
Intro level
Intro to Cave to 30 m (with that certification or equivalent); discovery dive to ~8 m in the first chamber without certification; cavern dive to 18 m with a cavern certification.
Configuration
Two cylinders (in 2020 twin 10 l steel); the seasonal levels only with a water level of at least 8 m.
Who can dive where
  • CaveAt least Cavern
  • Cavern zoneCavern zone / easier part: at least Intro to cave
  • Whole caveConfigurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
  • Whole caveGoes down to 40 m (trimix or deco may be needed) · doesn't decide who may dive
Entry or dive feeThrough a dive centre or guide

This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.

How to get there

In the Serra da Bodoquena, ~30 km from Bonito (the last 4 km dirt road), ~3 km from Nascente Azul. After ~20 years closed, open again with a licence since January 2022. Guided only, through the Voucher Único. Levels (2023): discovery (R$690), cavern (18 m), Intro to Cave (30 m) and Cave (40 m, two cylinders configured to your training). In 2020 the operator asked for a passport copy, a full cave certification, DAN insurance and a signed release.

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Around Gruta do Mimoso

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Sources, sharing and disclaimer

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Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training. Compiled from web research (Oct 2026): X-Ray Mag (2020), Melhores Destinos (2023), the websites of Gruta do Mimoso, Lagoa Misteriosa and Abismo Anhumas, viagensecaminhos.com, Catraca Livre (2025), G1 (2011), Correio do Estado (2022), SBE Notícias, USP Revista de Biologia and A Crítica (2026). No reliable coordinates: no pins. Certification and configurations are estimates. Prices change with the season.