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Czechia · about 6 km from Blansko

Vývěr Punkvy (Punkevní jeskyně)

Info · exploration

Diving only by ČSS research groups with a permit from the Moravský kras PLA administration; no access for visiting divers.

  • CertificationFull cave
  • SpecialExperienced divers
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Now at Vývěr Punkvy (Punkevní jeskyně)

Status
Closed

What it looks like

All 1 videos and posts

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.

Search for more onYouTube ↗Instagram ↗Facebook ↗

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

The dive

This is where the underground Punkva comes out, in Pustý žleb, 1.5 km upstream of Skalní mlýn, at ~350 m elevation. Originally it was a small outflow cave ending in a sump.

Only exploration diving happens here; recreational cave diving does not exist in the Moravian Karst. You reach the sumps only after a stretch of dry cave, climbing with all your gear. Permission from the authorities goes through the Czech Speleological Society (ČSS) and is a lengthy process with a research purpose, in which landowners and other stakeholders also have a say. Even where the water looks easier to reach, you soon dive into the part of the system that needs that permission.
Source: Jan Sirotek, Česká speleologická společnost (gesprek met Jos, november 2026) ↗
The Punkva system reacts strongly to rain: in the storm of August 1970 the Punkva swept away parked cars below Macocha and the water in the system rose more than 10 m in one place.
Source: ČT24, Aug 2020 ↗
Profile and sections

This is where the underground Punkva comes out, in Pustý žleb, 1.5 km upstream of Skalní mlýn, at ~350 m elevation. Originally it was a small outflow cave ending in a sump.

The Punkevní jeskyně waterway was opened from 1920 onwards by blasting sump ceilings and pumping sumps dry; since then ~12 million visitors have passed through by boat. The resurgence was the end point of the ČSS traverses of 2023 (>7 km, ~600 m underwater, 7 sumps, 11 hours) and 2025 (7.5 km, ~1 km underwater, 2 days, ~80 volunteer helpers).

Depth and profile
Depth of today's sumps not published · historically: the 'Zlý sifon' (33 m deep) was pumped dry in 1933 · 2023 traverse (Sloupský potok → Punkva): 7 sumps, the longest 300 m / -20 m
Configuration
Not applicable for visitors.
DPV: Not DPV-suitable (estimate)
Research dives only: no scooter.
Who can dive where
  • CaveAt least Full cave
  • Whole caveConfigurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
  • Whole caveConfiguration unknown — research beforehand · doesn't decide who may dive
  • Whole caveExperienced divers only · doesn't decide who may dive
Dry sections / haulingExperienced diversDepends on water level or swellPermission 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

Show cave: tours with a walk and a boat trip on the underground Punkva (since 1933). Diving only by ČSS research groups with a permit from the Moravský kras PLA administration; there is no access for visiting divers.

Plan your route ↗

Around Vývěr Punkvy (Punkevní jeskyně)

FillsNo fill station known nearby
Caves nearby2 within 2 km

News

All (1)

Nearby

Articles about cave diving that name a place within 25 km of this site, but no cave by name. They're not necessarily about this site.

Access and rules change: check what applies locally right before your trip. Source: GDELT Project and the news feeds of diving magazines. Search for more news ↗ Searched automatically, last on 13 Nov 2026.

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Sources, sharing and disclaimer

Sources

Current conditions

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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 (Mine Diving CZ/minehraniczna.cz and HP Diving: Nov 2018 diving conditions and safety rules; Javorník town, Kudy z nudy, Deník 2019–2023, DIVE Magazine 2022, minediving.de, dark-team.de, Speleoaquanaut; hranickapropast.cz, Hranice town, Ochrana přírody 2023, ČT24 2019 and 2020, České noviny/ČTK, iROZHLAS and Hanácká Drbna 2026; speleo.cz (ČSS), Czech Geological Survey, Advanced Diver Magazine, turistika.cz, Deník 2023 and 2025; Wikipedia; stranypotapecske.cz; Divecentrum Hradec Králové, Trygon Brno, Zero Gravity; Ostrava City Hospital and Ostrava city; Sept 2026); access to the caves confirmed by a former chief of the Czech cave diving commission (Oct 2026). Pins from Wikipedia, stranypotapecske.cz, HP Diving and turistika.cz. ~ = estimate. Rules change — check locally.