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What is the largest cave system in Australia?

June 14, 2025 by MySydneyDetour Leave a Comment

By MySydneyDetour • Updated May 29, 2025

Australia is home to some of the most breathtaking natural wonders in the world, including its vast network of caves. These underground marvels are a testament to the country’s geological diversity and rich history. Among them, the largest cave system in Australia stands out as a must-visit destination for any traveler. In this article, we will explore the details of this incredible cave system and why it should be on your travel bucket list.

Table of Contents

  • The Jenolan Caves: Australia’s Largest Cave System
  • Exploring the Jenolan Caves
  • Other Australian Caves to Explore

The Jenolan Caves: Australia’s Largest Cave System

Exploring Jenolan Caves
Visitnsw.com

The Jenolan Caves, located in the Blue Mountains region of New South Wales, are the largest cave system in Australia. This network of caves features over 40 kilometers of underground passageways, stunning limestone formations, and crystal-clear underground rivers. The caves were formed over millions of years through the process of erosion and are estimated to be around 340 million years old.

Visitors to the Jenolan Caves can choose from a variety of tours that cater to all levels of experience and fitness. The caves are well-maintained and offer a range of amenities, including guided tours, accommodation, and dining options.

Exploring the Jenolan Caves

The Lucas Cave
Jenolancaves.org.au

One of the most popular tours at the Jenolan Caves is the Lucas Cave Tour. This tour takes visitors through the largest and most spectacular cave in the system, the Lucas Cave. The tour lasts for approximately 1.5 hours and covers around 900 stairs, so it is recommended for those with a moderate level of fitness.

During the tour, visitors will be treated to breathtaking views of the cave’s many limestone formations, including the famous “Broken Column” and “Cathedral” formations. The tour also includes a boat ride on the underground river that runs through the cave.

For those looking for a more challenging adventure, the Plughole Adventure Tour is an excellent option. This tour takes visitors through the deepest parts of the cave system, including a 30-meter abseil and a crawl through narrow passageways. This tour is not for the faint of heart and requires a high level of fitness and experience.

Other Australian Caves to Explore

While the Jenolan Caves are the largest cave system in Australia, there are many other incredible caves to explore throughout the country. Some other notable Australian caves include:

The Naracoorte Caves in South Australia, which are home to some of the best-preserved fossils in the world.

Filed Under: Travel Tips

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