Australia, with its diverse landscapes and ancient geological history, is home to some of the oldest and most remarkable caves in the world. These fascinating subterranean realms hold stories of immense geological processes, prehistoric ecosystems, and the deeply ingrained cultural heritage of the Indigenous peoples who have lived here for tens of thousands of years.
Spanning millions of years in age, these underground wonders are windows into the distant past. In this article, we’ll explore eight of Australia’s oldest and most significant caves, marveling at their history, unique formations, and the tales they tell of a land frozen in time.
List of the Oldest Caves in Australia
1. Jenolan Caves, New South Wales

Nestled in the Blue Mountains, the Jenolan Caves are believed to be the oldest discovered open cave system in the world, estimated to be around 340 million years old. These caves, carved out of limestone during the Carboniferous period, are a hallmark of natural beauty and geological wonder. The sparkling stalactites and stalagmites that decorate the chambers have been shaped over countless millennia, offering visitors a glimpse of Earth’s dynamic processes.
The Indigenous Gundungurra people have long regarded the Jenolan Caves as sacred. Their stories link the caves to the Dreamtime and emphasize their spiritual importance. Beyond cultural heritage, the caves attract visitors with their dramatic underground rivers, unique formations such as the “Broken Column,” and pristine underground chambers—each a masterpiece of natural design.
Today, the Jenolan Caves are a protected and celebrated site. Guided tours offer the opportunity to explore not only their physical beauty, but also their scientific significance. Whether you’re a geology enthusiast or just looking for an awe-inspiring experience, Jenolan’s timeless atmosphere never fails to amaze.
2. Naracoorte Caves, South Australia

Part of the World Heritage-listed Naracoorte Caves National Park, this network of limestone caves dates back at least 500,000 years and is a treasure trove of paleontological discoveries. The caves provide an unparalleled record of Australia’s ancient fauna, with their well-preserved fossil deposits offering insights into ecosystems of the Pleistocene epoch.
One of the most fascinating discoveries in the Naracoorte Caves is the remains of the giant prehistoric marsupials known as megafauna. Creatures such as the Diprotodon—a wombat-like animal the size of a car—are vividly brought to life through fossils discovered in the caves. These preserved remains tell the story of a time when Australia’s wildlife was drastically different from the species found today.
Visitors can explore the Fossil Hunter’s Walk or take guided tours into the caves themselves. The Victoria Fossil Cave, in particular, offers an incredible opportunity to witness evidence of the past first-hand. Beyond their scientific importance, the caves’ intricate formations and eerie atmosphere make them a must-see destination.
3. Buchan Caves, Victoria

The Buchan Caves in East Gippsland are approximately 370 million years old, formed during the Devonian period. They are revered for their exquisite calcite features, including stalactites, stalagmites, and helictites that decorate their cavernous interiors. The Royal Cave and Fairy Cave are the most famous and accessible parts of this ancient network.
The caves formed as water dissolved the soft limestone over millions of years, creating the intricate tunnels and chambers seen today. The underground rivers still active in these caves continue this slow but relentless process of natural sculpting. Above ground, the surrounding Buchan Caves Reserve offers scenic picnic areas and rich wildlife.
Aside from their geological allure, these caves also hold cultural significance for the Gunai Kurnai people, the traditional custodians of this land. Today, guided tours shed light on both the natural history and the Indigenous heritage of the site, making a visit to the Buchan Caves a deeply enriching experience.
4. Margaret River Caves, Western Australia

Western Australia’s Margaret River region is renowned worldwide for its wines, but its caves are equally remarkable. The region is home to over 150 caves, many of which are millions of years old. Among the oldest and most visited are the Jewel Cave, Lake Cave, and Ngilgi Cave—each with its own unique features.
Jewel Cave, estimated to be over 500,000 years old, boasts awe-inspiring formations such as the “Frozen Waterfall.” Meanwhile, Lake Cave is famous for its tranquil, reflective underground lakes that mirror the mesmerizing formations above. Ngilgi Cave holds special cultural significance to the Wardandi people, adding another layer of importance to the site.
The caves also serve as a delicate sanctuary for rare flora and fauna, some found nowhere else in the world. Whether you’re walking among stalactites that glitter like diamonds, learning about the Indigenous legends of Ngilgi Cave, or simply marveling at the otherworldly beauty, the Margaret River caves leave an indelible impression.
5. Cutta Cutta Caves, Northern Territory

The Cutta Cutta Caves are among the oldest tropical caves in Australia, with an estimated age exceeding 500 million years. Located near Katherine, these limestone caves are shaped by monsoonal rains that have slowly eroded the rock over eons. The name “Cutta Cutta” means “many stars” in the Jawoyn language, reflecting the shimmering appearance of the cave walls.
The caves are home to a surprisingly rich biodiversity. Several species of bats—including the rare ghost bat—make their homes here. The caves also host a variety of insects and frogs, adapted to survive in the dark, humid environment. Visitors may even spot iridescent calcite crystals embedded in the cave walls, resembling a starry night sky.
With their long history and stunning formations, the Cutta Cutta Caves provide an intriguing glimpse into Australia’s natural and Indigenous history. Guided tours ensure the protection of this fragile ecosystem, while granting visitors the chance to witness its splendor up close.
6. Undara Lava Tubes, Queensland

The Undara Lava Tubes in Far North Queensland are geological marvels that were created by volcanic activity approximately 190,000 years ago. While they may not be as ancient as some limestone caves, their formation process and enormous scale make them equally captivating. These tubes are the remnants of one of Earth’s longest lava flows from a single volcano.
The tubes were created when the molten lava on the surface of a flow cooled and hardened, while the hot lava inside continued to flow away, leaving behind hollow tunnels. Some of the tubes stretch for up to 100 kilometers, creating vast cathedral-like spaces beneath the ground. Their unique formation provides insight into Australia’s volcanic history.
Beyond their geological importance, the Undara Lava Tubes host a variety of wildlife, including bats and insects. Visitors can join guided tours to explore these colossal tubes while learning about their formation, as well as the rich biodiversity that now calls them home.
7. Kelly Hill Caves, South Australia

Located on Kangaroo Island, the Kelly Hill Caves consist of an intriguing complex of limestone caves formed millions of years ago. Their name supposedly originates from a story about a horse named Kelly, who is said to have fallen into one of the caves. While the origin of their name remains an entertaining tale, the caves themselves are an impressive piece of natural history.
The Kelly Hill Caves are notable for their impressive karst features, showcasing delicate formations such as twisting helictites and gracefully pointed stalactites. Visitors can observe fossilized remains embedded in the walls, adding to the caves’ reputation as a reservoir of Australia’s natural history.
In addition to cave tours, the surrounding national park offers opportunities for bushwalking and wildlife spotting. The park’s tranquility and scenic beauty make it a perfect complement to the mystery and magnificence of the underground world hidden within the Kelly Hill Caves.
8. Yarrangobilly Caves, New South Wales

Located in the Snowy Mountains, the Yarrangobilly Caves date back to over 440 million years ago, earning them a place among the oldest limestone caves in Australia. These caves are renowned for their stunning formations, underground pools, and thermal springs that draw thousands of visitors each year.
The limestone in the Yarrangobilly Caves was laid down during the Silurian period, long before dinosaurs roamed the Earth. Over time, water has sculpted this limestone into an intricate maze of chambers and formations, each unique and mesmerizing. Highlights include the Shawl Cave’s delicate draperies and the blue-tinted pools of the Jersey Cave.
Adding to their allure, the Yarrangobilly area offers thermal pools that remain warm year-round. Visitors can combine a cave tour with a relaxing soak, making it a unique experience for both body and mind. For history, geology, and natural wonder, these caves remain a must-visit destination.
Conclusion
Australia’s oldest caves are more than just geological formations—they are time capsules preserving millions of years of history, evolution, and culture. From the intricate stalactites of the Jenolan Caves to the volcanic wonder of the Undara Lava Tubes, each site offers a unique blend of natural beauty and scientific significance. They bring us closer to the ancient processes that shaped our planet while connecting us to Indigenous narratives and ecosystems that have endured through the ages.
As stewards of this remarkable heritage, it is our duty to explore, protect, and cherish these subterranean marvels for generations to come. Whether you’re an adventurer or a history enthusiast, these caves are sure to inspire awe and ignite curiosity for all who visit.






















