Wildlife & Nature
Sinkholes, springs & wetland birdlife
The best wildlife & nature in Mount Gambier
Crystalline freshwater springs, mirror-still sinkholes, ancient cave systems and internationally significant wetlands make the Limestone Coast a natural wonderland - and a haven for birds, bats and rare aquatic life.
Read our guide to wildlife & nature ↓Browse wildlife & nature by area
Admella Discovery Trail
View →A coastal heritage trail commemorating the 1859 wreck of the SS Admella, one of Australia's worst maritime disasters.
Blue Lake
View →The cobalt crater lake
A volcanic crater lake that turns a vivid cobalt blue each summer, ringed by a 3.6km walking and cycling track.
Blue Lake Pumping Station
View →Historic waterworks drawing the city's drinking water from the Blue Lake.
Brownes Lake
View →The quiet fourth lake in the Mount Gambier volcanic complex.
Cape Banks Lighthouse Free
View →A lighthouse on a wild coast
A skeletal steel lighthouse on a remote, wreck-strewn stretch of coast near Carpenter Rocks, watching over reefs that claimed many ships.
Cave Garden (Thugi) Free
View →A cave in the city centre
A dramatic limestone sinkhole and waterfall in the heart of Mount Gambier, of deep cultural significance to the Boandik people.
Crater Lakes Walk
View →A loop trail around the rims of the Blue Lake and Valley Lake craters, taking in lookouts over the volcanic landscape.
Engelbrecht Cave $$
View →A cave beneath the streets
A guided show cave winding beneath the streets of Mount Gambier, popular with cave divers exploring its flooded passages.
Ewens Ponds Conservation Park
View →Drift-snorkel three spring pools
Three interconnected freshwater spring ponds of extraordinary clarity, linked by channels you can drift-snorkel through.
Hells Hole
View →A deep, flooded sinkhole hidden in pine forest near Mount Gambier, a well-known cave diving site.
Kilsby Sinkhole
View →One of the world's premier freshwater dive sites, a crystal-clear limestone sinkhole on private farmland near Mount Gambier.
Little Blue Lake Free
View →A sinkhole swimming hole
A deep, intensely blue water-filled sinkhole south of Mount Gambier, a popular spot for a bracing freshwater swim.
Mount Schank Free
View →A near-perfect volcanic cone
One of Australia's youngest volcanoes, a textbook scoria cone south of Mount Gambier with a steep walking trail to the crater rim.
Piccaninnie Ponds Conservation Park
View →Snorkel a crystal chasm
A Ramsar-listed coastal wetland whose crystal-clear freshwater springs and the deep "Chasm" draw snorkellers and divers from around the world.
Umpherston Sinkhole Free
View →The Sunken Garden
A collapsed limestone cave transformed into a terraced sunken garden of hydrangeas, ivy and hanging vines, floodlit at night when possums emerge.
Valley Lake
View →A crater lake in the Crater Lakes reserve with a wildlife park, boardwalks and easy walking beside the water.
About wildlife & nature in Limestone Coast
The Limestone Coast sits on a vast bed of limestone, and water shapes nearly all of its natural wonders. Crystal-clear springs at Piccaninnie Ponds and Ewens Ponds draw snorkellers and cave divers from around the world, while the cobalt Blue Lake and the cascading ferns of Umpherston Sinkhole reveal the volcanic side of the region.
Wildlife thrives in the wetlands and parks. Bool Lagoon and the lakes around Naracoorte host tens of thousands of waterbirds, and the Naracoorte Caves preserve a World Heritage fossil record of Australia's vanished megafauna. Along the coast, Little Dip Conservation Park shelters kangaroos, emus and seabirds among its dunes and lakes.
Much of this nature is accessible on short, well-marked walks and boardwalks, making it ideal for families and casual visitors. Dawn and dusk are the best times for spotting wildlife, and the cooler months bring peak birdlife to the wetlands.
Wildlife & Nature in Limestone Coast - frequently asked questions
What is the Limestone Coast known for when it comes to wildlife and nature?
The region sits on a vast bed of limestone, so water shapes nearly all of its natural wonders - crystal-clear freshwater springs, mirror-still sinkholes, ancient cave systems and internationally significant wetlands. Its headline attractions are the World Heritage-listed Naracoorte Caves, the cobalt Blue Lake at Mount Gambier, and the spring-fed snorkelling sites at Piccaninnie Ponds and Ewens Ponds. It is also a haven for birds, bats and rare aquatic life found almost nowhere else.
Why does Mount Gambier's Blue Lake change colour, and when is the best time to see it?
Each November the Blue Lake shifts from a dull steel-grey to a vivid cobalt blue, gradually fading again from late February into March. The change is driven by warmer surface water in summer causing tiny calcium carbonate crystals to form, which scatter blue light. The best time to see it at its most intense is between November and March.
Do I need a permit or booking to snorkel at Piccaninnie Ponds or Ewens Ponds?
Yes - both spring-fed sites require a permit to enter the water, available on a single-visit or annual basis, and you should book your snorkel or dive session before arriving. Cave diving at Piccaninnie Ponds is more restricted and only open to current Cave Divers Association of Australia members rated for sinkhole diving. Water access can also be temporarily closed, so always check the official Parks SA website before you travel.
What can I see at Naracoorte Caves, and do I need to book a tour?
Naracoorte Caves is South Australia's only World Heritage-listed site, famous for fossil deposits spanning around 500,000 years, including megafauna such as the Diprotodon and marsupial lion, plus a breeding colony of the critically endangered southern bent-wing bat. Entry to the park is free but guided cave tours, such as Victoria Fossil Cave and the family-friendly Alexandra Cave, carry a fee. Tours can sell out, so booking online in advance is recommended.
Where is the best birdwatching on the Limestone Coast?
Bool Lagoon Game Reserve, near Naracoorte, is the standout - a Ramsar-listed wetland of international importance that hosts the largest ibis rookery in South Australia and is visited by up to 150 bird species, with boardwalks and bird hides for easy viewing. The best birding is generally during and after the winter-spring flooding, when the lagoon is full and birds are nesting. Coastal Canunda National Park is also good for spotting kangaroos, emus and seabirds.