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Switzerland

6 sites · down to 89 m

Cave diving in Switzerland

  • Sites6
  • Max depth89 m
  • Water temperature6–8 °C
  • Dive centres8
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Diving and fills

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Fills nearby

  • Fill stationDive Center Thunersee (Hilterfingen)16 kmIn the shop: air, nitrox, trimix, O₂ and argon (per the SSI listing). Outdoor fill station: air or nitrox 36% to 200 bar.Route ↗
  • Fill stationNemo Tauchsport (Heimberg)21 kmAir, in the shop and 24/7 at the outdoor fill station (with a Nemo fill badge); nitrox only in the shop, price on requestRoute ↗
  • Fill stationTec Diving (Luzern)52 kmFill station; which gases is not stated — askRoute ↗
All 8 providers ↓

Why come here

Switzerland has no single cave area, but scattered, cold and deep karst springs: the Bätterich and Gelber Brunnen at Lake Thun, the Sorgente Bossi in Ticino and the Rinquelle above the Walensee. All of them are full cave dives, the deepest to -80 and -89 m on trimix with long deco, in water of 6–8 °C at the Bätterich and 6 °C in the Rinquelle. Season matters: spring snowmelt brings dangerous currents at the Bätterich, where winter and late summer are best, the Rinquelle is practically a winter dive at low flow, and the Sorgente Bossi reacts slowly to rain and can be dived almost all year. The Sorgente Bossi needs online registration and approval beforehand, and diving is banned in the protection zone of springs captured for drinking water. Interlaken is the base for Lake Thun.

Don't miss

  • Bätterich (Bätterichquelle): the outlet of the Siebenhengste-Hohgant system in Lake Thun, dived since 1969 and visited by teams from abroad, down to -80 m.
  • Sorgente Bossi (Böss): one of the largest karst springs of Monte Generoso, where the water spends 4–5 years in the massif on average and conditions stay stable almost all year.
  • Rinquelle: a T-shaped system above the Walensee that was the longest known underwater cave in the 1970s, dived in winter at low flow.

On a rest day

  • St. Beatus Caves: In the mountains above Lake Thun you walk through about 1 km of lit cave, where legend says Saint Beatus fought a dragon.
  • Trümmelbach Falls: In the Lauterbrunnen valley ten waterfalls carry glacier meltwater from the Eiger, Mönch and Jungfrau down inside the mountain, reached through tunnels and stairways.
  • Seerenbach Falls: Near Betlis on the Walensee three waterfalls drop down the cliff and the Rinquelle forms a fourth below them, on the hiking trail from Weesen to Quinten.

All 6 sites

Configuration
My certification

2 closed not shown ·

SiteMax depth
Bätterich (Bätterichquelle)Backmount · Full cave80 m
Gelber BrunnenNot known yet · Full cave68 m
RinquelleSidemount · Full cave–
Sorgente Bossi (Böss)Permission neededEntry or dive feeSidemount · Full cave89 m

Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training.

Map

Cave Dive centre Closed

Dive centres and fill stations

8 dive centres, fill stations and instructors

  • Fill station

    Dive Center Thunersee (Hilterfingen)

    Hübelistrasse 1, 3652 Hilterfingen, Switzerland

    Fills
    In the shop: air, nitrox, trimix, O₂ and argon. Outdoor fill station: air or nitrox 36% to 200 bar. · Wed–Fri 16:00–20:00, Sat 8:00–16:00
    Rental
    Drysuits and cylinders, among other gear
    Website ↗Route ↗

  • Fill station

    Nemo Tauchsport (Heimberg)

    Stationsweg 7 (Zentrum Lädeli, 1. UG), 3627 Heimberg, Switzerland

    Fills
    Air, in the shop and 24/7 at the outdoor fill station · Mon 18:30–19:30, Tue–Thu 17:30–18:30, first Saturday of the month 9:00–14:00, other Saturdays 9:00–12:00
    Rental
    Complete kit, drysuits, 10, 12 and 15 l cylinders (with the first fill) and torches
    Website ↗Route ↗

  • Dive centre

    Tec Diving (Luzern)

    Grossmatte 30, 6014 Luzern

    Fills
    Fill station · By appointment
    Training
    Full cave, CCR, Trimix · GUE, TDI
    Website ↗Route ↗

  • Fill station

    Tauchschule Divepad.ch (Urdorf)

    Urdorf (ZH), Switzerland — street address: ask

    Fills
    Air, O₂, helium, trimix 18/45 and argon · 24/7, access via app
    Website ↗Route ↗

  • Fill station

    Tiefenstein UnterwasserWelten (Horn, Bodensee)

    Seestrasse 19, 9326 Horn, Switzerland

    Fills
    Air, nitrox 32, trimix 18/45, O₂, helium and argon · Tue–Fri 10:00–12:00 and 13:30–18:30, Sat 8:00–16:00
    Website ↗Route ↗

  • Dive centre

    7Oceans (Horgen)

    Bahnhofstrasse 30, 8810 Horgen

    Fills
    Air, nitrox and trimix · Tue and Wed 13:30–17:30
    Training
    Cavern, Intro to cave, Full cave, Sidemount, CCR, Trimix · TDI, SDI
    Website ↗Route ↗

  • Fill station

    Blue World Dive & More (Zuzwil)

    Hinterdorfstrasse 7, 9524 Zuzwil

    Fills
    Fill station · Wed 14:00–19:00, Thu 14:00–20:00, Fri 16:00–19:00
    Website ↗Route ↗

  • Dive centre

    Tauchersupply VERO (Haag)

    Palmweg 1, 9469 Haag (Rheintal)

    Fills
    Per the IANTD register nitrox, technical EANx, trimix, oxygen and argon · Wed and Fri 13:30–18:30, Sat 9:00–16:00
    Training
    Cavern, Intro to cave, CCR · IANTD, SSI
    Website ↗Route ↗

Order: partners first, clearly marked as partner; then dive centres by distance from Interlaken and independent instructors by name. Not a recommendation: check what they offer yourself.

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Where to stay

Find a place near Interlaken, Thun, Lugano, Mendrisio, Weesen

Villages that work well as a base for the caves in this region. Find a place for your team:

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Practical info: rules, fills and emergency numbers

Emergencies

  • 112, or Rega 1414 (say 'Tauchunfall', diving accident). For a cave accident, Spéléo-Secours Suisse, which has its own cave-diving rescue team, is alerted through Rega. DAN Europe: +39 06 4211 5685.
  • Hyperbaric chambers (GTÜM list, Jan 2025): HUG Geneva, Rue Gabrielle-Perret-Gentil 4, 1211 Genève 14, 24/7, +41 22 372 22 44 · HBO-Zentrum Basel, Kleinhünigerstrasse 177, 4057 Basel, +41 61 631 30 13 (30 min advance notice) · mobile emergency chamber in Mendrisio (close to the Sorgente Bossi), 24/7, +41 91 800 18 32. Rega decides where you go (2009 arrangement: German-speaking Switzerland to chambers in Germany, Romandy to Geneva, Ticino to Italy).

Access and rules

  • Access differs per site. Sorgente Bossi (Arogno, TI): only after online registration and approval by Underwater Training CMAS.CH, which the municipality put in charge of access (Full Cave minimum, dive medical, search-and-recovery insurance, booking and key pick-up; regulations of 3 December 2024). Lac souterrain de Saint-Léonard: show cave, not open to divers. Hölloch (Muotathal): information only, entry only with a Trekking Team guide or as an AGH researcher. Bätterich, Gelber Brunnen and Rinquelle: no permit or ban known; the Rinquelle cave may only be entered by cave divers.
  • Drinking water: many Swiss karst springs are captured for drinking water. In groundwater protection zone S1 around a capture, only installations and activities that directly serve the drinking-water supply are allowed (BAFU) — so no diving there. Ask the canton or municipality beforehand about any spring not listed here.

Gas and fills

  • Gas: Lake Thun: Dive Center Thunersee in Hilterfingen (trimix and O₂ per its SSI listing; outdoor station air or nitrox 36% to 200 bar). Eastern Switzerland: Tiefenstein in Horn on Lake Constance (trimix 18/45, O₂, helium, 24 h stations) and Divepad in Urdorf near Zürich (trimix, O₂, helium, 24/7 with an app subscription). Ticino: ask about fills when booking the Sorgente Bossi; compressors at the spring are banned. Western Switzerland: DiveStation (Neuchâtel) and plongee.ch (Puidoux), see the Doubs and Jura region.

Water and season

  • Season and water: cold (Bätterich 6–8 °C, Rinquelle 6 °C, Saint-Léonard 11 °C): drysuit and heating. Bätterich best in winter and late summer (dangerous currents during spring snowmelt); Rinquelle practically only in winter at low flow; the Sorgente Bossi reacts slowly to rain and can be dived almost all year.

Rest day

  • Non-diving days: the Beatushöhlen show cave at Sundlauenen, close to the Bätterich (~1 km lit); a boat tour on the Lac souterrain de Saint-Léonard (2026: 19 March–1 November, 10:00–17:00, online booking); the walk to the Seerenbach falls and the Rinquelle from Betlis (by car or boat via Weesen).

News

No recent news found about the caves in this region.

Searched automatically, last on 13 Nov 2026.

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Current conditions

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

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Compiled from web research (sorgentebossi.ch, Arogno municipality, Catasto Speleologico del Canton Ticino, sergioveri.com, Corriere del Ticino, LiberaTV, Ticinonline, Tauchclub Seeteufel, Plattform J, WeDIR.ch, taucher.net, dark-team.de, the 'Der Bätterich' presentation, rinquelle.ch, Erlebnis Geologie, Le Scaph, Lac souterrain de St-Léonard, Wikipedia, BAFU, SAC/Spéléo-Secours, GTÜM, swiss-divers.ch, kohmann.ch, Luftverbund, SSI, Tiefenstein, Divepad; Sept 2026; Hölloch: Arbeitsgemeinschaft Höllochforschung, Trekking Team, Die Höhle, NZZ; Nov 2026). Pins from the Ticino cave register (converted from Swiss grid coordinates), Wikipedia and a club page (Bätterich car park); the Lac Souterrain de Saint-Léonard is pinned from OpenStreetMap; one site has no pin. ~ = estimate. Rules change — check locally.