Fascinating Mount Gambier Sinkholes To Visit

Fancy a swim in a dazzling cobalt waterway, or a stroll around a lush, emerald wonderland? The famous Mount Gambier sinkholes can set the mood for every kind of adventure.

Reykjavik, Naples, Cartago; when you’re yearning to explore a dramatic volcanic landscape, there’s only one destination where the sinkholes – a depression caused by the collapse of the surface layer – are a celebration (particularly in the warmer months): Mount Gambier on South Australia’s spectacular Limestone Coast.

Proving that good things are worth the wait, geologists believe that Mount Gambier’s (justifiably) famous sinkholes are the result of rain on the region’s three fault lines breaking up the huge expanse of limestone, more than 25 million years old, spanning South Australia’s south-east. Water flowing through the limestone has formed 50 sinkholes, with at least 15 of them filled with water.

So, when is the best time to take advantage of Mount Gambier’s sinkholes? While Mount Gambier itself is a treat to visit year-round, aqua babies are best to plan a trip in the warmer months, between November and March, when the water is less biting and the colour morphs from a hue which can fall anywhere from steel grey or garden variety blue to vibrant cobalt. The good news? Whether you hire a car and drive to each spot (easily done since most of the major holes are located within a 20-minute drive of one another) or book a tour, there’s the perfect sinkhole experience for every kind of traveller, including these tourism-heavy hitters.

Kilsby Sinkhole

Will it be snorkelling, scuba diving, free diving or a sinkhole tour of the training site for the South Australian Police? At Kilsby Sinkhole , located on a sheep farm among the rolling grasslands of Moorak just 14 kilometres south of Mount Gambier, you can choose all of the above.

Out here, where it’s not unusual for people to show up in mermaid outfits for the ultimate photoshoot, water clarity has drawn people to the site for decades, the giant chasm descending 65 metres and allowing up to 50 metres (most days) visibility for scuba drivers and freedivers, and pristine water clarity for those who prefer to frolic towards the surface. 50-minute guided tours cover the sinkhole’s fascinating history and geology – a real hit with the kids.

a diver facing the light as it passes through the water under Kilsby Sinkhole — It’s a stunning sight when the sun rises over Kilsby Sinkhole. (Image: Adam Stern)

Snorkelling tours run for two hours, complete with a safety briefing and under the supervision of a snorkel supervisor, while those interested in diving and freediving can book a licensed operator to help their dream come true.

Kilsby Sinkhole is a privately owned site, thus, all visits must be pre-booked online. The good news? They now offer a range of two-bedroom luxury villas at a surprisingly affordable price point, so you can take advantage of the sinkhole (and its surrounds) day after day.

Umpherston Sinkhole

In the middle of Mount Gambier’s city streets, a lush, subterranean oasis blooms some 20 metres deep in a natural well providing cool respite for those who want to escape those blazing days, but don’t much fancy getting wet.

Named after its designer James Umpherston who designed this urban botanic garden in the late 1800s, Umpherston Sinkhole/Balumbul (one of the most photographed locations on the Limestone Coast) was once a cave formed through the dissolution of the limestone, becoming a sinkhole only after the top of its chamber collapsed and its topsoil provided the perfect environment on which flora to grow.

lush greenery at Umpherston Sinkhole — Stroll through the enchanting vines. (Image: South Australian Tourism Commission/Adam Bruzzone)

Now it’s best described as a gateway to a secret world filled with hanging vines and terraces, the depth and scale of which is best enjoyed from the viewing platforms before taking a walk down to the bottom to view the hydrangeas (but only after grabbing an ice cream or coffee from the onsite kiosk). Yep, at Umpherston Sinkhole, it’s all about walking and observing.

Beautiful any time of day, locals swear by a visit at dusk when the friendly locals, the Umpherston possums, come out to greet their visitors. Why not stick around and make use of the free barbecue area?

Little Blue Lake

Disregard its name; Little Blue Lake is actually a sinkhole with a difference: the ability to change colour like a mood ring so that the steel grey it rocks throughout the winter months transforms into a vibrant cobalt blue come the summertime (November to March). It’s all thanks to a phenomenon caused by the formation of calcite crystals warmed by the rays of the sun.

Located in the Kanawinka volcanic area, wedged between the two (mercifully) dormant volcanoes of Mount Gambier and Mount Schank, follow the campervans making a line to Little Blue Lake, which is conveniently situated in a paddock by the highway.

a diving platform above the milky turquoise waters of Little Blue Lake, Mount Gambier — Mount Gambier’s Blue Lake transforms into milky turquoise between November and March. (Image: Lucy Adamopoulos)

With a 47-metre depth, plus a diameter of 40 metres, the lake is what you might call bracing – a fact locals love and visitors quickly get used to as they enter the sinkhole via the stairs or ramp. Your best bet? Warm up beforehand or afterwards by lying out in the sun, or by enjoying a picnic (you’ll have to bring your own provisions). Just beware that there are no public amenities, so best to use the bathroom before you depart from your accommodation.

Got plenty of time in and around Mount Gambier up your sleeve and are keen to experience further sinkholes? Be sure to also put Ewens Ponds, Hell’s Hole and Caroline Sinkhole on your list.

Wanting to explore the rest of Mount Gambier? Follow our guide for awe-inspiring things to do in Mount Gambier.

NSW’s beach towns take on a new kind of magic when the cooler months hit.

Autumn and winter cast a whole new light on the New South Wales coastline. The sun hangs lower, the shadows stretch longer and the air is crisp and fresh. The frenetic summer crowds are gone, and the rhythm slows to the pace of a leisurely winter bush walk through still, damp quiet. From wineries pouring winter reds to the annual whale migration up the ‘humpback highway’, here’s why winter on the New South Wales coast is better.

Winter on the NSW South Coast

Winter down south means misty dawns, sipping a flat white on the beach. The thrill of a whale spotting from the headlands and evenings spent slowly savouring Shoalhaven’s wines by the fire.

Start in Kiama, where waves crash into the famous Blowholes. This natural spectacle is achieved when underground pressure and swell unite, sending sea spray soaring above the basalt cliffs. This means, due to larger waves, you’re even more likely to see an explosive display in winter.

two people standing in front of kiama blowhole — See Kiama’s blowholes in full force. (Image: Destination NSW)

Inland, the Minnamurra Rainforest Walk in Budderoo National Park is all subtropical forest and trilling lyrebird song. Make sure to walk silently along the elevated boardwalks, past winter-swelled creeks and the tangled roots of fig trees. You might just hear one of the musically talented birds mimicking your footsteps.

Feeling adventurous? Book a session at Illawarra Fly Treetop Adventures for a wobbly walk through the canopy on Australia’s highest zipline.

Illawarra Fly Treetop Adventures on the new south wales south coast — Walk among the tallest trees. (Image: Destination NSW)

Next, it’s time to take the speed down a notch with a drive over to the historic village of Berry. It’s been a beloved stop for generations of Sydneysiders heading south, as has the obligatory stop at its famous doughnut van for crisped, cinnamon goodness. If you’re ready for something a little more chunky, stroll right past the boutiques (okay, go on, just one quick peek) to Milkwood Bakery . Their flaky pastries and all-day breakfasts are best enjoyed under cream-coloured fringed umbrellas.

Back in Kiama, you’ll also find modern Middle Eastern share plates at Miss Arda , and next-level burgers on The Hungry Monkey ‘s extensive menu: an ode to everything pattie-shaped.

End the day at The Sebel Kiama on the harbour. The apartment-style rooms come with full cooking facilities — a welcome addition for families looking to test out the local produce they picked up along the way. Including, but not limited to, vintages from nearby Crooked River Wines .

The Sebel Kiama exterior — Sleep by the harbour.

Winter on the Mid-North Coast

A trip up north is a gentle one at this time of year. You’ll still feel that sunshine warming your shoulders, but the lower temperatures make space for rainforest walks, vineyard lunches and long coastal hikes. All without that pesky humidity.

First stop? It has to be the town of Port Macquarie. Start by marking out a stretch of the nine-kilometre coastal walk you want to tackle (or do the whole thing), which winds from Town Beach to the lighthouse along rugged headlands and quiet beaches. Hot tip: binoculars. Don’t forget them if you want to partake in some close-up sightings of dolphin pods or whales migrating up the ‘humpback highway’.

Port Macquarie Coastal Walk, winter on the New South Wales coast — Wander the Port Macquarie Coastal Walk. (Image: Destination NSW)

Swap sea for canopy at the Sea Acres Rainforest Boardwalk , one of the last remaining pockets of coastal rainforest in the state. The accessible elevated trail passes under climbing ferns and tangled strangler figs, and is alive with scarlet robins, goannas and diamond pythons – if you’re lucky, you might see one slipping through the leaf litter.

Afterwards, lunch is sorted at Cassegrain Wines , where crisp whites and elegant reds are grown using a blend of French winemaking tradition and Australian innovation. After a tasting, saddle up for a horse ride through the estate.

port macquarie koala hospital — Meet Koala Hospital inhabitants at their temporary home. (Image: Destination NSW)

The beloved Koala Hospital is rebuilding, so meet its furry patients in their temporary bushland abode at Guulabaa – Place of Koala . Here, you can see rehabilitation up close and learn how one of Australia’s most iconic animals is being carefully rewilded and protected.

Back in town, Whalebone Wharf serves up fine dining with serious views to go with your oysters. Prefer something breezier? Bills Fishhouse + Bar does everything from blue swimmer crab toast to zucchini noodles drizzled in basil and wattleseed pesto. Down by the waterfront, Little Shack slings ceviche, mushroom burgers and fish tacos with casual aplomb.

At the end of it all, check in to Mercure Centro Port Macquarie , right in the heart of town. From here, everything’s walkable. Just park the car, pop your keys in your pocket, and stroll down to the beach.

bed at Mercure Centro Port Macquarie — Check in to Mercure Centro Port Macquarie.

Winter on the Central Coast

On the Central Coast, expect to explore oyster farms that sit on estuaries, beaches that stretch empty for miles, and the kind of surprise sightings of whale sprays that can stop a hiker in their tracks.

The best way to settle into this slower rhythm is with the Bouddi Coastal Walk , an 8.5km trail that dips through rainforest and eroding cliffs. It’s made for unhurried walkers and long-lens photographers.

Up the coast in Terrigal, it’s prime time to spot humpbacks on the move. Join a cruise or find your own perch — Crackneck Lookout and Norah Head Lighthouse are both local favourites.

a humpback whale breaching on the central coast — Spot migrating humpback whales. (Image: Destination NSW)

Travelling with kids? It would be sacrilege not to visit the Australian Reptile Park . Here, Elvis the saltwater crocodile reigns supreme, and the venomous snake talk somehow manages to be simultaneously terrifying and fascinating.

If that isn’t enough to wear them out, zip and climb your way through Treetops Adventure Central Coast , a ropes course in the canopy of Ourimbah State Forest. Afterwards, steady your nerves with a garden tasting at Firescreek Botanical Winery , where fruit- and flower-infused wines are served under the trees.

Switch earth for sea and hop on a boat tour with Broken Bay Pearl Farm . Once you’re out on the water, you’ll learn how pearls are cultivated and have a hands-on lesson in grading and shucking.

woman holding a pearl at Broken Bay Pearl Farm — Get a hands-on pearl lesson. (Image: Destination NSW)

As the day winds down, grab a seat at Yellowtail in Terrigal , which takes seasonal native produce and presents it with Asian flair. Prefer something simple? Award-winning Mount White restaurant Saddles is a quintessential Australian dining destination. Find an impressive breakfast and lunch menu, dedicated to country-style cooking and seasonal produce.

Stay the night at Pullman Magenta Shores , between the ocean and the lake. There are plenty of ways to relax, with a massage at the day spa, a poolside beanbag and a round or two at the golf course.

restaurant at Pullman Magenta Shores central coast — Eat well at Pullman Magenta Shores’ restaurant. (Image: Destination NSW)

Winter in Wollongong

Wollongong does contrast pretty well. One moment you’re walking beneath an enormous Buddha, the next you’re ordering soju a few blocks from the surf. It’s a town where skydivers land on beaches, trails lead to paddocks and winter days stretch long and clear beneath the Illawarra cliffs.

If you’re coming from the north, start by crossing over the Sea Cliff Bridge. Curving dramatically out like a jutting ‘C’ out above the water means you won’t be able to resist pulling over (safely, in designated lookouts) to gaze down at the waves crashing on the cliffs below.

Just inland is the serenity of the Nan Tien Temple , the largest Buddhist temple in the Southern Hemisphere. You can trace the prayer path, explore the temple gardens and sip delectable Kam Quat Tea in the quiet light at the Dew Drop Inn Tea House.

monk teaching tai chi at Nan Tien Temple — Learn about Buddhist practices. (Image: Destination NSW)

Next, dust off that cowboy hat. It’s time for the Darkes Forest Riding Ranch . Take a guided canter via trail rides among peppermint gums and paddocks. If you’re happier to look at animals than ride them, Symbio Wildlife Park has red pandas dozing in trees, kangaroos that hop up to you and lessons on conservation.

The brave among you shouldn’t miss Skydive Australia – Wollongong . A free fall over the coast via tandem jumps before tumbling down to the sand is a breath-stopping thrill. Prefer to keep your feet on the ground? Check out the program at Wollongong Art Gallery , which delivers contemporary and Aboriginal exhibitions in the centre of town.

monkey at Symbio Wildlife Park — Hang out with the locals at Symbio Wildlife Park.(Image: Destination NSW)

As evening settles in, nab a table at Baby Face Kitchen . It has an ever-changing set menu, with dishes like hand-picked mud crab with white asparagus and salty brown butter, to sheep’s milk and honey ice cream. For something more casual, Dagwood Bar + Kitchen brings the fun with Korean fried chicken, sake cocktails and weekly all-you-can-eat bao buns.

Check in to Novotel Wollongong Northbeach , right by the sand. With a beachfront pool and ocean views, it’s an ideal base for whatever pace you choose.

Winter on the New South Wales coast starts with a cosy place to stay. Start planning your adventure at all.com.

The fascinating sinkholes in Mount Gambier to visit

Fancy a swim in a dazzling cobalt waterway, or a stroll around a lush, emerald wonderland? The famous Mount Gambier sinkholes can set the mood for every kind of adventure.

Kilsby Sinkhole

Umpherston Sinkhole

Little Blue Lake

7 excellent Mount Gambier restaurants to try now

The perfect 3-day Mount Gambier itinerary

A guide to the magical blue lakes of Mount Gambier

Mount Gambier accommodation: An ultimate guide to the very best stays

Why winter is the best time to be on the New South Wales coast

NSW’s beach towns take on a new kind of magic when the cooler months hit.

Winter on the NSW South Coast

Winter on the Mid-North Coast

Winter on the Central Coast

Winter in Wollongong