Croatia

Jezero Sinjac (Gorske oči)

Max depth208 m
CertificationFull cave
SpecialExperienced divers

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Directions

Diving and fills

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Fills nearby

Fill stationDive Center Krk (Kornić)~63 km, by ferry or boatAir and nitrox (to 40 % €8, to 100 % €14 per fill, 2026); air in your own cylinder only with a valid inspectionRoute ↗

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Now at Jezero Sinjac (Gorske oči)

Status: Open
Visibility: No reports yet
Water temperature: Not known yet.
Rain, next 3 days: 14 Sat0 mm-1°/5°15 Sun0 mm-3°/10°16 Mon18.7 mm7°/12°

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How was the visibility in the cave? Report it

poor visibility5–10 mgood visibility

Date of your diveSign in to report the visibility

This is about the visibility inside the cave, not in the head pool or the open water at the entrance.

TemperatureDate of your diveSign in to report the temperature

Report what your dive computer showed in the cave. Only the number of reports, the temperatures and the latest date are public.

Source: MET Norway (CC BY 4.0). Updated daily.

The dive

A deep karst spring with water of drinking-water quality.

Profile and sections

A deep karst spring with water of drinking-water quality.

It was dived in 1984, 1999, 2003 and 2007–2016, including the international expedition 'Kamena galaksija – Zrmanja 2016' by the Dinaridi society, with over 70 participants from 12 countries.

Source: HGSS – Komisija za speleospašavanje ↗

Depth and profile: Count on -208 m (HGSS; Garašić gives -203 m) · earlier: -155 m (Casati, 2004), -186 m (Frédéric Swierczynski) and -197 m (Casati), Aug 2016
Configuration: Profile unknown; visibility often only 3–4 m — expedition only.
DPV: Not DPV-suitable (estimate): Deep spring shaft; no point.

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 208 m (trimix or deco may be needed) · doesn't decide who may dive
Whole caveExperienced divers only · doesn't decide who may dive

Experienced diversDepends on water level or swell

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.

Source: HGSS – Komisija za speleospašavanje ↗

How to get there

At the hamlet of Jezero near Plaški; four connected basins ('Gorske oči'), the water rises from the deepest.

Plan your route ↗

Around Jezero Sinjac (Gorske oči)

Fills1 fill station · 63 km

Dive Center Krk (Kornić)
~63 km, by ferry or boat
Dunat 50, 51517 Kornić, Krk
Air and nitrox (to 40 % €8, to 100 % €14 per fill, 2026); air in your own cylinder only with a valid inspection
Daily 9:00–19:00
PADI 5 Star Dive Resort by Dunat beach (Kornić) with three boats. Dives a string of caverns and tunnels in the Kvarner: Vrbnik Cave on Krk, Big Cave and Blue Hole off Cres, the Geierfels at Plavnik and the Prvić tunnel. Guide €12 per dive (2026). No trimix or cave courses mentioned.
Website ↗Navigate ↗

Caves nearby1 within 39 km

Izvor Klokota (Bihać)104.5 m · 39 km

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Now at Jezero Sinjac (Gorske oči)

The dive

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Around Jezero Sinjac (Gorske oči)

Dive Center Krk (Kornić)

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