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Rana · about 1 km from Plura Valley (Plurdalen)

Steinugleflåget

  • Max depth132 m
  • CertificationFull cave
  • Water temperature≈ ~6 °Cestimated, no reports yet
  • SpecialSidemount
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Diving and fills

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Fills nearby

  • Fill stationPlura Valley (Jordbru)~6 min drive (estimate)Air, nitrox, trimix, O₂ and argon; 3 compressors, 3 boosters and a nitrox 32 bankRoute ↗
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The dive

Steinugleflåget has very clear water, with sand on the rocks, even on the ceiling. Old and new lines partly run side by side. Because of the hard access it is rarely dived.

Part of Plura Cave System. Also in this system: Pluragrotta

Remote: hours to days of transport through a dry cave with a collapse zone; getting an injured person out of the head pool ~100 m down is very difficult.
Source: SukellusLuola – Diving in Steinugleflåget, aug 2010 (pdf) ↗Source: TekDiveUSA – Arctic cave diving ↗

1 earlier accident or incident has been reported at this cave. Read what happened ↓

Profile and sections

Steinugleflåget has very clear water, with sand on the rocks, even on the ceiling. Old and new lines partly run side by side. Because of the hard access it is rarely dived.

Finnish explorers found the connection with Plura in September 2013; after the 2014 accident two survivors left the system through this dry cave. According to a blog nobody does the traverse any more.

Depth and profile
Head pool ~100 m below the entrance (VG: dry chamber 90 m below ground, 250 m into the mountain). Large areas shallower than -20 m; one tunnel to -70 m (2010). Along the connection with Plura (~1–2 km underwater): restriction at close to -130 m (The Local; Helsingin Sanomat: ~-125 m; VG: trouble from -112 m), deepest point -132 m.
Configuration
CCR with bailout stages (2010 team) or sidemount; backmount is hard because of the long carry with tight sections. Water ~6 °C, cave air ~3 °C: drysuit and warm clothing for the dry section.
DPV: Not DPV-suitable (estimate)
Carrying a scooter through the dry access is barely feasible; no scooters are mentioned for the 2010 expedition.
Who can dive where
  • CaveAt least Full cave
  • Whole caveConfigurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
  • Whole caveGoes down to 132 m (trimix or deco may be needed) · doesn't decide who may dive
  • Whole caveRopework (SRT) needed
  • Whole caveExperienced divers only · doesn't decide who may dive
RopeworkDry sections / haulingExperienced diversThrough 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

Second entrance of the Plura system, ~1 km south of Pluragrotta. Steep slopes lead to a dry cave on the side of a huge collapse; the first 30 m are tight, then over big boulders through a large hall to the head pool ~100 m lower (climbing; whether ropes or ladders are needed: ask). In 2010 a team needed two days to get gear for two divers (2 CCRs, 5 bailouts) down, and two days to get it back up. Also on Plura Valley's private land: check in there beforehand.

Plan your route ↗

Around Steinugleflåget

Fills1 fill station · 1 km

  • Plura Valley (Jordbru)

    ~6 min drive (estimate)

    Plurdalsveien 1495, 8615 Skonseng

    Air, nitrox, trimix, O₂ and argon; 3 compressors, 3 boosters and a nitrox 32 bank

    Open all year; ask for fill times

    Dive centre on the Jordbru farm, 200 m from Pluragrotta, with a dive shop, restaurant and accommodation (20 beds, lounge, sauna by the river). Rental of OC, sidemount and CCR equipment. Courses: cavern, intro/full cave, DPV cave, stage cave, CCR (rEvo), Horizon SCR and ice diving.

    Website ↗Navigate ↗
Where to sleepAround Plura Valley (Plurdalen) on Booking.com ↗

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Caves nearby1 within 1 km

News

All (1)

Accidents and incidents

What happened at this cave before, with the sources. No names are given; read it as a lesson for your own planning.

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.

More of the latest in Rana, Nordland (Norway): conditions, closures and news →

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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 (Norsk Grottedykkerforbund, Plura Valley, Visit Helgeland 2025, MoiRana.com 2023, Waterpixels 2025, OFDS 2018, Dive Rite 2020, Scubago, Cave Database, Life in Norway 2023, Fædrelandsvennen 2014, VG 2014 and 2024, Dykking.no 2024, DAN 2024, SukellusLuola 2010, TekDiveUSA, dive-scuba.com, InDEPTH, GUE.tv, Suunto 2016, DIR-NO 2003, Wikipedia, OpenStreetMap via Mapcarta, Helse Bergen, Oslo University Hospital, UNN, Indremedisineren 2025, Norwegian Diving Federation, FORF/Norsk Grotteforbund; Sept 2026). Pins from OpenStreetMap, checked against NGDF's coordinates for the farm; Litjåga has no pin. ~ = estimate. Rules change — check locally.