Bunabie Blowhole

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Bunabie Blowhole

Highlights

The Bunabie Blowhole is a bucket list attraction located along the Nullarbor, near the Nullarbor Roadhouse in outback South Australia.

Located in Western Australia, Caiguna is the second stop east of Norsemen on the journey across the Nullarbor Plain. ‘Caiguna’ is believed to have derived from an Aboriginal word that means ‘spear track’, pertaining to the speargrass abundant in the area. The townsite was established in 1962 to assist traffic in the Nullarbor plain to make way for the Commonwealth Games.

Aussie travellers, ranging from grey nomads to committed spelunkers keep coming back to this small town because of the Caiguna Blowhole, which is located 5 kilometres west of Caiguna and 10 metres on the Eyre Highway. You can easily spot the Caiguna Blowhole since there’s a visible sign pointing to the area, so don’t miss this oddly interesting road stop.

When caves ‘breathe’, air pressure falls and rises. The periodic reversal of air flow is caused by the pressure equalisation between the underground cavities and the air pressure above the ground, while the speed of breathing is related to the volume of air contained in the cave, as well as the cross-sectional area of a cave’s entrance.

The Caiguna blowhole, just like Nullarbor caves, breathe more vigorously than all the other caves in Australia – in fact, air movement at the cave entrance has been measured to be around 72 kilometres per hour. As you get closer to the blowhole, you can feel the earth breathing through the air currents, which, according to Aboriginal legends, were believed to be the breath of spirits. You will also see that the Caiguna blowhole is connected to a tiny cave that has roughly 1.5 metres clearance. These blowholes on the Nullarbor have been formed by both chemical and physical weathering processes through underground cavities.

Source: "Climb the Blowholes of Caiguna", Dec 10, 2015: Nullarbor Roadhouse website

Activities

Photography
Sight-seeing

Facilities

No facilities at the cave. Visit the Nullarbor Roadhouse for the most up to date information before you visit the blowhole.

Important Information

Guidelines

Always do some research before heading out for your journey. Visit the parks website for up to date information on the current conditions.
Stay safe and get the most out of your park visit by preparing for natural hazards and other outdoor risks. You are responsible for your own safety and the safety of those in your care.
Wear suitable footwear and ensure to wear appropriate clothing to protect yourself from the elements.
Plan ahead and ensure to take enough food and water for your journey.
Always stay on the marked tracks where possible. Never climb fences, they are there for your own safety.
Please consider the environment, take your rubbish with you or place in the bins provided. We want to ensure these beautiful places are still here for our future generations to enjoy.
Ensure to let a responsible adult know of your plans and report back into them once you have finished exploring for the day.

Photo & content credits: Nullarbor Roadhouse & Aussie Bucket List®

Location

Getting to Bunabie Blowhole

Address: Bunabie Blowhole, Nullarbor SA 5690

Website: https://www.nullarborroadhouse.com.au/climb-the-blowholes-of-caiguna/

Common Questions

Bunabie Blowhole FAQ

Where is Bunabie Blowhole located and how do I get there?
Aussie Bucket List lists Bunabie Blowhole at Bunabie Blowhole, Nullarbor SA 5690. Most travellers reach it by car; well-signed local roads lead to parking near the entry. Check the destination page for any seasonal access changes before you go.
What makes Bunabie Blowhole a bucket list experience?
The site describes Bunabie Blowhole as a standout spot offering beautiful scenery, native wildlife and a sense of adventure unique to its region—perfect for travellers chasing memorable photos and nature time.
Do I need to pay entry fees for Bunabie Blowhole?
According to relevant sources, access to Bunabie Blowhole is generally free, though some surrounding parks or tours may charge a small fee. Always confirm current prices and permit rules online before visiting.
Which facilities are available at Bunabie Blowhole?
Bunabie Blowhole typically provides basic visitor needs such as car parking, information signs and picnic areas. Toilets, barbecues or cafés may be available nearby; check the listing for exact amenity details.