Mount Gambier
Tank Cave (Tantanoola)
- Max depth20 m
- CertificationFull cave
- Water temperature≈ 14–16 °Cestimated, no reports yet
- SpecialSidemount
Diving and fills
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The dive
A maze cave in soft limestone. In 1993–94 more than 700 m of passage was added, with the first air chamber. The CDAA bought the cave in 2010–2011.
Profile and sections
A maze cave in soft limestone.
In 1993–94 more than 700 m of passage was added, with the first air chamber. The CDAA bought the cave in 2010–2011.
- Depth and profile
- A maze of shallow passages to ~-20 m, more than 7 km (heritage summary 2021: ~10 km, the longest underwater cave in South Australia); connected to Fossil Cave since 2018.
- Configuration
- Low passages with silt and clay floors: sidemount is easiest (estimate). Most passages have a fixed line; side passages need jumps. CDAA rating: Advanced Cave; also the venue for Advanced Cave assessments.
Who can dive where
- At least Full cave
- Configurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Goes down to 20 m (trimix or deco may be needed)
- Experienced divers only
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
Near Tantanoola, ~25 km west of Mount Gambier, on the CDAA's own land. Usually open at weekends; book at least a week ahead through the CDAA. Every diving day needs a Site Access Officer and the familiarisation schedule is compulsory. Keep the gate closed. Down a short ladder to a small lake.
Around Tank Cave (Tantanoola)
FillsNo fill station known nearby
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