A collapsed limestone sinkhole within Penambol Conservation Park, Caroline Sinkhole reveals a deep, water-filled cavity draped with hanging vines and lush grasses. The crystal-clear groundwater offers exceptional visibility, with shafts of sunlight penetrating deep into the submerged limestone ledges. An elevated viewing platform provides a safe vantage point over this striking geological feature in South Australia's volcanic Limestone Coast.
Caroline Sinkhole
BeginnerMAYBE
MAYBE
Fair. Experienced snorkellers only.
Showing last known conditions
Wave Height 0.0 mSwell Period 0.0 sWind Speed 6.2 knPrecipitation 29 mmTidal Phase unknown
Last evaluated
The spot
Community-maintained
Community contribution: submitted by Daniel
Know before you go
Logged by the community, confirmed by mods
Moderate risk: Unstable cliff edges
The sinkhole has steep, unstable edges with no protective fencing at certain points. Stay on the designated platform and path.
Moderate risk: Deep water / overhangs
The sinkhole is deep with submerged ledges and overhangs — poor overhead awareness can be dangerous.
Low risk: Cold water temperature
The water is very cold (year-round spring-fed aquifer temperatures around 12-15°C), posing cold shock risk.
Wildlife Guide
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Getting in
Shore entry
Entry
Located within Penambol Conservation Park, about 20 km south of Mount Gambier. Follow the signed walking path from the car park to the sinkhole viewing platform.
Parking & facilities
Car park available at Penambol Conservation Park
parkingpicnic_tables
Free entry
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About this data
- Conditions last evaluated
- Spot data last updated
- Data sources
- Open-Meteo (marine & weather conditions), tide predictions via UTide, community contributors (descriptions, hazards, marine life).
- License
- Spot content licensed under CC BY-SA 4.0. How's the Spot is open source.
Weather & swell ┬╖ Open-Meteo marine & weather APIs Tides ┬╖ UTide harmonic analysis Sea & safety ┬╖ community reports