3 mines · down to 160 m · 2 suitable for an intro team
Mine diving in Bergslagen
- Mines3
- Max depth160 m
- Water temperature0–6 °C
- Dive centres2
Diving and fills
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Fills nearby
- Fill stationÄventyrsgruvan (Tuna Hästberg)Air and nitrox (EAN21–30; standard EAN30), trimix, O₂, argon; rebreather cylinders up to 3 l. Max 10 % above working pressure.Route ↗
- Fill stationLångban – duikbasis Långbans DyksällskapCompressor plus O₂ and helium bank; which mixes and up to what pressure: askRoute ↗
Why come here
Bergslagen means old mines, worked from the 15th century and flooded when the pumps stopped: Äventyrsgruvan at Tuna Hästberg, with more than 7 km of line and crystal-clear water with over 30 m visibility, and the club mine at Långban near Filipstad. You dive only through the operator or a club: Äventyrsgruvan is booked online after you upload your certificates, Långban goes through membership. The water is 4–5 °C at Tuna Hästberg and about 6 °C at Långban, so you need a drysuit with thick or heated undergarments and dry gloves. Äventyrsgruvan has strict rules: no solo diving, trimix and approval below -40 m, and breaking the rules can mean a permanent ban. The Sala silver mine is temporarily closed; Borlänge is the base for Tuna Hästberg.
Don't miss
- Äventyrsgruvan – Tuna Hästberg: crystal-clear water with over 30 m visibility, holding mine carts, ladders, switches with light bulbs, dynamite boxes and a 19th-century pump station.
- Långbans gruvor (Kollegiegruvan): rails, ore carts, wooden platforms and chains in water of about 6 °C with up to 40–50 m visibility, in a mine known for more than 300 minerals.
On a rest day
- Falun Mine: The Falun copper mine is the heart of the Great Copper Mountain mining area, a UNESCO World Heritage Site since 2001.
- Sala Silver Mine: In this silver mine, worked until 1908 and now a mining museum, you go underground on a guided tour.
- Långbanshyttan: By the Långban mines stands the 16th-century blast furnace, next to which the inventor John Ericsson was born.
All 3 mines
1 closed not shown ·
| Site | Max depth | Type | Certification |
|---|---|---|---|
| Äventyrsgruvan – Tuna HästbergEntry or dive feeBackmount · Cavern | 114 m | Backmount | Cavern |
| Långbans gruvor (Kollegiegruvan)Permission neededEntry or dive feeBackmount · Intro to cave | 160 m | Backmount | Intro to cave |
Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training.
Map
Dive centres and fill stations
2 dive centres, fill stations and instructors
Fill station
Äventyrsgruvan (Tuna Hästberg)
Krongruvvägen 50, Borlänge
- Air and nitrox (EAN21–30
Fill station
Långban – duikbasis Långbans Dyksällskap
Långban, Filipstad
- Compressor plus O₂ and helium bank
Order: partners first, clearly marked as partner; then dive centres by distance from Borlänge and independent instructors by name. Not a recommendation: check what they offer yourself.
On this list, or should you be? Get a free partner card →Where to stay
Find a place near Borlänge, Ludvika, Filipstad, Sala
Villages that work well as a base for the caves in this region. Find a place for your team:
- BorlängeBooking.com ↗
- LudvikaBooking.com ↗
- FilipstadBooking.com ↗
- SalaBooking.com ↗
The links to Booking.com are affiliate links: if you book through one, DiveTripPlanner earns a small commission. You pay the same.
Practical info: rules, fills and emergency numbers
Emergencies
- Call 112 and report a 'dykolycka' (diving accident); SOS Alarm directs you to an available chamber. Give 100 % O₂. Nearest: Karolinska University Hospital Solna, Tryckkammare HBO, Eugeniavägen 3, Solna — direct +46 8 123 946 80 / 81, switchboard +46 8 123 700 00; divers from Tuna Hästberg were treated there (2011, 2012). Other civilian chambers: Sahlgrenska/Östra, Gothenburg (+46 31 342 10 00) and Blekingesjukhuset, Karlskrona (+46 455 73 10 00). DAN Europe +39 06 4211 5685.
Access and rules
- Access: in Swedish mines you dive only via the owner or a club with an access agreement. Book Äventyrsgruvan (Tuna Hästberg) on diving.adventuremine.se; Långban (Långbans Dyksällskap, with Värmlands Museum) and Sala (Sala Silvergruva Dykarklubb) go through membership on gruvdyk.se, which also shows the dive-day calendar. Upload your certificates in advance; approval at Äventyrsgruvan takes up to 48 h.
- Rules at Äventyrsgruvan (strict; breaking them can mean a permanent ban): no solo diving, max 120 min per dive, trimix and approval deeper than -40 m, max END 30 m, remove or touch nothing, change lines only with approval, share computer logs on request, report incidents.
Gas and fills
- Gas: Äventyrsgruvan fills air, nitrox, trimix, O₂ and argon on event days (you analyse yourself); Långban has a compressor with an O₂ and helium bank for members. No dive shop with trimix found in Borlänge, Ludvika or Filipstad — ask.
Water and season
- Cold: water 4–5 °C (Tuna Hästberg), ~6 °C (Långban) and 2–3 °C (Sala); the air in the mines is also ~4–5 °C. Drysuit with thick or heated undergarments and dry gloves, two lights; helmet mandatory in Äventyrsgruvan, which is dived year-round.
Safety
- General mine-diving caution: expect loose rock, old metal, cables and pipes (entanglement), rust and silt, and vertical shafts; never breathe the air in an air pocket.
Getting around
- Location: Tuna Hästberg is ~25 km S of Borlänge and ~25 km N of Ludvika; Sala ~90 km straight line E of Borlänge; Långban ~21 km N of Filipstad (~2 h drive from Borlänge, estimate; ~4 h from Gothenburg or Stockholm).
Rest day
- Rest day: dry adventure tours in Äventyrsgruvan (via ferrata, suspension bridge, underground concert hall), tours of Sala silvergruva (e.g. to 60 m depth) and the mining village of Långban.
Good to know
- Caves: cave diving in Sweden is expedition or research work and is not part of this region. In the Bjurälven nature reserve (Strömsund, Jämtland) diving in the flooded cave system is banned without a permit from Länsstyrelsen Jämtland; the diving section of the speleological federation SSF ran expeditions there around Easter 2007 and in 2008 (snowmobiles, through the ice, ~0 °C water, tight and sandy passages). Korallgrottan (Jämtland) is open to the public only with a guide. Lummelunda (Gotland) is a show cave; divers found ~400 m of new passage beyond four sumps in 1985.
News
News articles that mention one of the caves in this region, collected automatically and not checked by us.
- Person taken to hospital after diving accident in Tuna Hästberg ↗
- Regulations stopped the divers in the mine in Tuna Hästberg – were not allowed to recover the body ↗
- Man dead in adventure mine – diving accident in Tuna-Hästberg ↗
Access and rules change: check what applies locally right before your trip. Source: GDELT Project and the news feeds of diving magazines.
Searched automatically, last on 13 Nov 2026.
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