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Malo okence (Retovje)

Slovenia · about 1 km from Vrhnika

Malo okence (Retovje)

  • Max depth45 m
  • CertificationFull cave

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.

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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

Malo okence is the other of the two strongest springs of Retovje, the steephead valley where the Velika Ljubljanica rises. The water temperature is not published.

The deepest part (-45 m) is beyond Slovenia's -40 m legal limit for compressed air: trimix needed.
Profile and sections

Malo okence is the other of the two strongest springs of Retovje, the steephead valley where the Velika Ljubljanica rises. The water temperature is not published.

The Retovje springs and sumps were first studied in 1939. A Slovenian dive school's cave team dives here year-round.

Depth and profile
Explored to 305 m in length and -45 m · compressed air legally limited to -40 m
Configuration
No published details on passage size or restrictions.
DPV: Not DPV-suitable
Short cave (305 m), and motorised craft are banned in Slovenian caves: electric scooters only for sump research (ZVPJ art. 18).
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 caveGoes down to 45 m (trimix or deco may be needed) · doesn't decide who may dive
Depends on water level or swellThrough 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 Retovje valley near Verd, just south of Vrhnika; the springs lie on a circular walking route. Parking and entry point: ask Slovenian cave divers.

Plan your route ↗

Around Malo okence (Retovje)

FillsNo fill station known nearby
Where to sleepAround Vrhnika on Booking.com ↗

The links to Booking.com are affiliate links: if you book through one, DiveTripPlanner earns a small commission. You pay the same.

Caves nearby6 within 60 km

Going to Slovenia with your team?

Marcel finds the sites that match your team's certifications.

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Something wrong, or do you know more?Depth, access, parking, the current situation: let us know.
Sources, sharing and disclaimer

Sources

Current conditions

Visibility, flow and water levels change quickly. Right before your dive, check what other divers report:

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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 (Drowning Protection Act ZVU, Uradni list RS 44/2000; Cave Protection Act ZVPJ via JZS; 24ur Jan 2009 and the JZS rescue archive; Svet24 Dec 2025; RTV SLO Jul 2026; Radio Ognjišče; the Slovenian diving federation's PAS atlas and emergency list (2021); Wikipedia; kraji.eu; Moja jezera; Kam na izlet; Dolenjski kras (JKNM); X-Ray Mag and InDEPTH (2020); wannadive.net; potapljanje.si; Norik-sub and watersports.si; visit-idrija.si; Sept 2026). Pins from Wikipedia, the SPZ atlas and Kam na izlet; three sites have no pin. ~ = estimate. Rules change — check locally.