Undarra Lava Tubes: Underground Adventure
While camped at Mount Surprise for the night, our travels briefly split in two. Neil held down the fort with Zoe in the motorhome, while Cameron headed off on a side quest he’d been itching to tick off: the Undara Lava Tubes.
Formed over 190,000 years ago, rivers of molten lava flowed from the Undara Volcano, creating these tubes. The surface cooled and hardened as the fiery lava beneath continued to move, leaving behind long, hollow tunnels. Today, they make up one of the world’s most extensive lava tube systems—and they’re right here in Far North Queensland.
The guided tour takes you down into these giant underground caverns, some stretching so wide and high they feel more like cathedrals than caves. In places, water still pools inside, catching the dim light and making the space even more surreal. Tania, the super-knowledgeable guide, wove geology with history, from Indigenous stories of the landscape to the European discovery of the tubes.
It’s not a challenging walk, but you do need to be on a guided tour; access is only available with a guide to help protect the fragile environment. And honestly, having someone explain the scale of what you’re standing in makes it all the more mind-blowing.
While Neil and Zoe enjoyed a quieter afternoon back at camp, Cameron returned buzzing with excitement (and a couple of hundred photos). The Undara Lava Tubes might not be the easiest detour, but if you’re anywhere nearby, they’re worth every kilometre.
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What are the Undara Lava Tubes?
The Undara Lava Tubes were formed by one of the Earth’s longest recorded lava flows from a single volcano. As the lava travelled more than 160 km, the outer surface cooled and hardened, while molten lava continued to flow inside. When the eruption ended, it left behind long, hollow tunnels stretching across the landscape.
Today, sections of the system are accessible on guided tours, giving a rare look into one of nature’s most extraordinary formations.
How to Get There
Undara is located in Far North Queensland, about 275 km southwest of Cairns and a short 45 minute drive on sealed roads from Mount Surprise.
Self-drive: Best accessed along the Savannah Way. The road is sealed but remote, so fuel up beforehand..
Tours and Access
Access to the lava tubes is only possible with a guide, helping to protect the fragile environment. Tours vary in length, but all involve some walking and stair climbing. We used Undara Lava Tube Tours
Guides: Knowledgeable and engaging, combining geology, history, and culture.
Difficulty: Moderate - not strenuous, but uneven ground and stairs mean sturdy shoes are a must.
Highlights: Towering cavern ceilings, hidden pools, and incredible acoustics that give the tunnels a cathedral-like feel.
Best Time to Visit
The best time to explore the lava tubes is during the dry season (April–September). Conditions are cooler, roads are more reliable, and wildlife is abundant.
The wet season can restrict access due to flooding and road closures. Always check conditions before you travel.
Final Reflections
The Undara Lava Tubes are more than just a geological wonder — they’re a reminder of the raw, fiery forces that shaped this land. Walking through them feels otherworldly, and for us, this side quest turned into a highlight of the trip. If you’re anywhere in the region, make the detour. It’s worth every kilometre.
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