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Croatia · about 33 km from Knin

Izvor Krnjeze

  • Max depth106 m
  • CertificationFull cave
  • SpecialExperienced divers

Diving and fills

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Fills nearby

  • Fill stationDiving Center Pongo (Primošten)~100 min drive (estimate)Air, nitrox (30–36%), oxygen and helium (ask); stage cylinders and 3-litre rebreather cylindersRoute ↗
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What it looks like

All 1 videos and posts

Videos and posts

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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

The Krnjeza is a right tributary of the Krupa (Zrmanja basin), and its water is clean enough to drink. The spring is one of Croatia's ten deepest karst springs.

Profile and sections

The Krnjeza is a right tributary of the Krupa (Zrmanja basin), and its water is clean enough to drink.

The spring is one of Croatia's ten deepest karst springs. It has been explored since 1968 (Garašić et al.); the sump was reached in 2000.

Depth and profile
Sump: -32 m (2003) · -98 m (Luigi Casati, expedition 'Zrmanjin Buk 2008') · -106 m known (Wikipedia); Garašić: 'over 100 m'
Configuration
Profile not published — expedition only.
DPV: Not DPV-suitable (estimate)
Deep sump; 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 106 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.

How to get there

Spring at Krnješka Glava in the Bukovica; the Krnjeza joins the Krupa after ~600 m. Access details are missing; in 1966 high water blocked the cave.

Plan your route ↗

Around Izvor Krnjeze

Fills1 fill station · 68 km
  • Diving Center Pongo (Primošten)

    ~100 min drive (estimate)

    Raduča ul. 11, 22202 Primošten

    Air, nitrox (30–36%), oxygen and helium (ask); stage cylinders and 3-litre rebreather cylinders

    Not stated — ask

    Dive centre with two Bauer compressors and a nitrox and trimix blender; TDI tech courses up to normoxic trimix and gas blender.

Where to sleepAround Knin on Booking.com ↗

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Caves nearby4 within 52 km

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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 (Garašić EGU 2017, Subterranea Croatica 2019, HGSS 2014, Wikipedia, stranypotapecske.cz, wannadive.net, dive centres, Kornati NP, Croatian Ministry of the Sea, KBC Rijeka, OXY, news; Sept 2026); for the Kvarner the pages of Dive Center Krk, JU Priroda and Wikipedia (Oct 2026). Pins come from Wikipedia, stranypotapecske.cz and wannadive.net; five springs have a pin from OpenStreetMap, one site has none (yet). ~ = estimate. Rules change — check locally.