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.

In recent years, Ballarat has emerged as one of Victoria’s most dynamic and daring cities. And, this spring, two unexpected creative showcases will take over the town.

No matter the season, it’s always a good time to visit Ballarat – but spring might be the most ideal. The weather is warmer, the skies are clearer, the flowers across its botanical landscapes are in bloom. And events in Ballarat transform the city into a playground of creativity.

This year, Ballarat will welcome both new and returning artistic events, best paired with a jaunt through the city’s eclectic array of things to eat, drink and explore. Here’s how to spend a spring weekend in this cool cultural hub.

The events

Two of the most exciting events hitting Ballarat this spring are the 2025 Ballarat International Foto Biennale and the inaugural edition of Sunnyside, a captivating and immersive art extravaganza.

Ballarat International Foto Biennale

Whether you’re a photography enthusiast or simply curious, the Ballarat International Foto Biennale is a must. The event permeates the entire city, with works by over 360 local and international photographers adorning over 100 buildings, businesses, streets and public spaces.

This year marks the 11th chapter and will centre on ‘Lifeforce’ – a theme that’s all about humanity and connection. Among the many talents on show, the headline artist is Campbell Addy, a British-Ghanaian creative who explores roots and identity. Be sure to visit before it ends in 2025 on 19 October.

Sunnyside

Sunnyside is making its debut this year, introducing a brand-new celebration of colour, creativity and community to Ballarat. The 17-day celebration, from 6 to 23 November, will feature immersive installations and experiences, talks, a vibrant opening night gala, and workshops covering everything from crochet to neon block printing.

Internationally acclaimed London-based artist Morag Myerscough will lead the celebration and convert Ballarat’s historic Mining Exchange – a gold rush era trading hall – and the city’s streets into a multi-sensory art spectacle.

While you’re there

Don’t miss out on everything else Ballarat has to offer. Here’s where to eat, drink, see and stay in the city.

Where to eat

Vibrant Latin American dishes at Pancho, adding flavour to Events in Ballarat. — Savour bold Latin American dishes at Pancho. (Image: Einwick)

For daytime dining, you’re spoiled for choice. Johnny Alloo does contemporary cafe fare in a warm and inviting space, while Hydrant Food Hall is a popular pick for breakfast and lunch classics. Eclectic Tastes makes seasonal dishes that incorporate plenty of local produce, giving you a great opportunity to taste the region’s flavours.

At night, head to Roy Hammond for delicious cocktails and contemporary Asian-inspired eats or Pancho for vibrant (and very good) Latin American food in fun surrounds. At Hop Temple, you’ll find an incredible selection of craft beers (more than 200, to be exact) and punchy pub fare, or you can head slightly out of town for tasty bistro classics at the historic and character-filled Buninyong Hotel .

In the mood for something fancy? Visit one of Ballarat’s many hatted restaurants, like Babae (produce-driven fine dining inspired by regional Victoria), Mr Jones (modern Asian by a chef with a Michelin pedigree) and Underbar (an ultra-exclusive spot doing ultra-refined tasting menus).

Where to drink

Food and wine tastings at Blue Pyrenees Estate, a refined experience beyond Events in Ballarat. — Relax over wine at Blue Pyrenees Estate. (Image: Visit Victoria)

No matter your poison, you’ll find a venue to suit in Ballarat. Aunty Jacks is a local institution, serving a generous line-up of beers made in the on-site brewery. Renard is perfect for a pre-dinner drink or nightcap, with a menu that spans creative signature cocktails, locally produced wines and Australian spirits.

Try some of Ballarat’s finest creations at one of its many boutique distilleries, including Grainery Lane and Itinerant Spirits. The former specialises in gin and vodka, while the latter offers gin, vodka and craft whiskey. Buy a bottle from either as a memento of your trip.

You can also venture a little further afield to one of the area’s renowned wineries and cellar doors. There are 25 scattered around the Pyrenees (Ballarat’s very own surrounding wine region), including Dalwhinnie, Summerfield and Blue Pyrenees Estate. Eastern Peake – a family-owned winery led by Young Gun of Wine 2025, Owen Latta – is also a must-visit.

What to see

A koala eating eucalyptus leaves at Ballarat Wildlife Park. — Meet a koala at Ballarat Wildlife Park. (Image: Visit Victoria)

If you’ve got time to spare after the thrill of the spring festivities, there’s lots to see and do. More art can be found in the city’s streets and laneways, with local street artists transforming the walls with impressive murals and installations.

Ballarat is equally renowned for its heritage architecture, much of which flourished during the gold rush. Notable buildings include Ballarat Town Hall, Her Majesty’s Theatre and Craig’s Royal Hotel, all located centrally and within walking distance of one another.

Travelling with kids? Head to Sovereign Hill for a living-history adventure or Ballarat Wildlife Park to meet koalas, reptiles and free-roaming kangaroos.

Where to stay

An elegant suite at Hotel Vera, offering boutique comfort. — Enjoy all-out luxury at Hotel Vera. (Image: Visit Victoria)

If you’re venturing to the city by train and want to stay somewhere central, Quest Ballarat Station is an excellent pick. The modern serviced apartments are situated just 250m from the station and a short stroll from downtown Ballarat, making coming, going and exploring the city incredibly easy. There’s also an on-site gym, barbecue area and accessible rooms available.

For a touch of French luxe in regional Victoria, The Provincial Hotel is a standout choice, with gorgeously appointed rooms and suites in a restored heritage-listed building. The hotel is also conveniently located on Lydiard Street, which is lined with grand historic architecture.

If you’re after something truly luxe, book a few nights at Hotel Vera. The exclusive collection of only seven suites presents all-out opulence: think lush linens, designer furniture, works by notable artists and gilded touches. It also happens to house fine-dining favourite Babae, making it an optimal stay if you’re keen to try the restaurant.

Getting there

aerial of hop lane in ballarat — Turn your Ballarat visit into a memorable weekend. (Image: Einwick)

One of the best things about Ballarat is its proximity to Melbourne. It’s only 90 minutes away by car – an easy journey down the Western Freeway – or can be easily reached by rail. The train from Southern Cross to Ballarat Station takes less than 90 minutes and drops you right in the centre of town.

Start planning your stay at visitballarat.com.au.

The fascinating sinkholes in Mount Gambier to visit