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Mato Grosso

Poço 2 de Maio

Info · exploration

Expeditions only: the caves lie in protected areas and are explored by teams with a state permit (SEMA-MT); no operator takes visiting divers.

  • Max depth60 m
  • CertificationFull cave
  • SpecialExperienced divers

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Now at Poço 2 de Maio

Status
Closed

The dive

A rarely visited cave: the dive starts in a siphon that splits into two passages at 30 m. According to the team, deep passages of the Dolina do Pai João may connect to it, which would make one large cave system.

The guideline is tangled in several places: risk of entanglement and difficult navigation.
Profile and sections

A rarely visited cave: the dive starts in a siphon that splits into two passages at 30 m. According to the team, deep passages of the Dolina do Pai João may connect to it, which would make one large cave system.

Depth and profile
A siphon that splits into two passages at 30 m, like a Y; the right branch continues deeper. The Nitrox (IANTD) team turned at 60 m: the bottom is not known.
Configuration
The Nitrox team dived on CCR.
Who can dive where
  • CaveAt least Full cave
  • Whole caveConfigurations: Backmount / twinset / Sidemount / CCR
  • Whole caveConfiguration unknown — research beforehand · doesn't decide who may dive
  • Whole caveGoes down to 60 m (trimix or deco may be needed) · doesn't decide who may dive
  • Whole caveExperienced divers only · doesn't decide who may dive
Experienced diversPermission needed

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

Near Nobres, in a protected area; only with a permit arranged in advance. Possibly the same cave as the 'Caverna Dois de Maio' of the Quebó da Mata cave complex in the Coqueiral district (SBE, 2003).

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Around Poço 2 de Maio

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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 (Nov 2026): Nitrox (IANTD) no. 8 (2026), the congress paper by Schirato, Ferrari and Cruz (2025), GUE's project brief (2024), Portal Amazônia (2024), Click Petróleo e Gás (2026), the SBE (2003), TNH1/Folhapress (2024), Estado de Minas (2026) and Wikipedia. No cave has a public coordinate: pins are missing on purpose. Certification and configurations are estimates.