WA’s best-kept secret: An ancient tunnel creek cave

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Discover Western Australia’s oldest cave system.

There are many reasons to visit The Kimberley: The Bungle Bungles, Horizontal Falls and incredible helicopter rides over massive waterfalls, to name a small fraction. But a place that you probably haven’t heard about is Dimalurru (Tunnel Creek).

What is Dimalurru (Tunnel Creek)?

About 350 million years ago, the Dimalurru (Tunnel Creek) was underwater, forming part of an ocean reef system. These days, the water level has dropped, but not before carving a huge 750-metre limestone tunnel that gets up to 20 metres high and 15 metres wide in some parts. It’s Western Australia’s oldest known cave system.

Besides its ancient history and incredible natural beauty, this is also a place of significant Australian history. In 1897, it was used as a hideout by the famous/ infamous (depending on who you ask) Bunuba Indigenous leader and freedom fighter of the time, Jandamarra.

end of Dimalurru (Tunnel Creek) the kimberleys western australia

These caves were carved by water hundreds of millions of years ago. (Image: Tourism WA)

Why explore Dimalurru (Tunnel Creek)?

Dimalurra travels from one side of the Napier Range to the other. And as beautiful as the range is from above, there’s an entirely different type of beauty below.

Wander through large caverns, with beams of sunlight leaking in from the world outside. Large stalactite formations hanging down from the roof add to the drama, as do mini-waterfalls along the tunnel wall. Also, keep an eye out for Indigenous rock art near both entrances of the tunnel.

Along the way, you’re likely to spot many different bat species and even freshwater crocodiles that call this cave home.

woman standing inside Dimalurru (Tunnel Creek) the kimberleys western australia

See the dramatic structures inside the cave. (Image: Tourism WA)

How to explore Dimalurru (Tunnel Creek)

Napier Range and Dimalurru reside in the West Kimberley, about 2.5 hours (180 kilometres) east of Derby. Head out yourself and take part in a day of hiking. Be sure to wear comfortable shoes that can get wet, and bring a torch (a real one, your phone torch light won’t cut it) as the tunnel gets pitch black in places.

If you don’t want to go it alone, join day trips from Derby, Fitzroy Crossing and Broome.

And, of course, check the Parks and Wildlife Service website for opening updates.

stalatites inside Dimalurru (Tunnel Creek) the kimberleys western australia

Hike it by yourself or join a day tour. (Image: Tourism WA)

Discover more to do in the Kimberleys while you’re there with this guide to 13 of our favourite experiences.

Kassia Byrnes is the Native Content Editor for Australian Traveller and International Traveller. She's come a long way since writing in her diary about family trips to Grandma's. After graduating a BA of Communication from University of Technology Sydney, she has been writing about her travels (and more) professionally for over 10 years for titles like AWOL, News.com.au, Pedestrian.TV, Body + Soul and Punkee. She's addicted to travel but has a terrible sense of direction, so you can usually find her getting lost somewhere new around the world. Luckily, she loves to explore and have new adventures – whether that’s exploring the backstreets, bungee jumping off a bridge or hiking for days. You can follow her adventures on Instagram @probably_kassia.
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6 reasons the best way to experience the Kimberley is by cruise

This remote corner of Australia is one of the world’s last frontiers. This is how to see it properly.

Vast, rugged and deeply spiritual, the Kimberley coast in Australia’s North West feels a world away from everyday Australia – and there are countless ways to explore it. But if you want to reach ancient rock art, hidden gorges and lonely waterfalls, it has to be by boat. Whether you’re aboard a nimble expedition vessel or a luxury yacht with all the trimmings, exploring by the water brings exclusive experiences, shows unique views and makes travel easier than any other mode. And that’s just the beginning of Australia’s North West cruises.

The True North Adventure Cruise in between sandstone cliffs.

Adventure starts where the road ends.

1. Discover Broome, and beyond

Explore your launchpad before you set sail: Broome. Here camels and their riders stride along the 22 kilometres of powdery Cable Beach at sunset. That’s just the start.

At Gantheaume Point, red pindan cliffs plunge into the turquoise sea, whose low tide uncovers fossilised dinosaur footprints. Broome’s pearling history runs deep. Japanese, Chinese, Malay and Aboriginal divers once worked these waters, and their legacy lives on in boutiques where South Sea pearls still shine.

If the moon’s right, you may catch the Staircase to the Moon over Roebuck Bay. Or simply kick back with a cold beverage and a film under the stars at Sun Pictures, screening since 1916.

Ride a camel along Cable Beach as the sun sinks into the Indian Ocean, casting golden light across the sand and sea.

Ride a camel along Cable Beach. (Image: Nick Dunn)

2. Unmatched access to The Kimberley

Once you’re onboard, expect a backstage pass to some of the most isolated places on Earth. No roads. No ports. No phone reception.

At Horizontal Falls/ Garaanngaddim, 10-metre tides surge through twin gorges like a natural waterpark ride that’ll make your palms sweat. Then there’s Montgomery Reef/ Yowjab: a giant living platform of coral and seagrass, where the sea pulls back to reveal waterfalls, sea turtles and ospreys.

Up north, King George Falls/ Oomari rage 80 metres down red cliffs. Zodiac boats often nudge in closer so you can feel the spray on your sun-warmed cheeks. You might even fly in to reach Mitchell Falls/ Punamii-unpuu, a four-tiered cascade where you can swim in freshwater pools above the drop.

Come spring, some itineraries veer west to Rowley Shoals: an atoll chain of white sand and reef walls. Then it’s up the winding Prince Regent River to King Cascade/ Maamboolbadda, tumbling over rock terraces, and into a Zodiac to view the Gwion Gwion rock art, whose slender, ochre-painted figures are older than the pyramids.

A cruise drifts beneath King George Falls, where sheer sandstone cliffs frame the thunderous plunge into turquoise waters.

Get closer to the Kimberley than ever before.

3. Taste the Kimberley with onboard hospitality

You might spend your days clambering over slippery rocks or charging past waterfalls. But when you’re back on the water, it’s a different story. Meals are chef-prepared and regionally inspired: grilled barramundi, pearl meat sashimi, mango tarts, and bush tomato chutney. One night it’s barefoot beach barbecues with your shipmates; the next, alfresco dining on the ship.

Small expedition ships each have their own personality, but many carry just 12 to 36 guests, making being out on the water a whole other experience. You might sink into a spa on the foredeck or sip coffee in a lounge while watching crocodiles cruise by. It’s choose-your-own-relaxation, Kimberley style.

4. Expert-led excursions through the Kimberley

These voyages are led by people who know the Kimberley like the back of their sunburnt hand. Attenborough-esque naturalists might gently tap your shoulder to point out rare birds or tell the story beneath a slab of rock. Historians can explain exactly how that rusted World War II relic came to rest here.

If your ship has a helipad, you might chopper straight to a waterfall-fed swimming hole. If not, you’ll still be hopping ashore for that wet landing at a secret creek.

Then come the evenings: songlines shared by Traditional Owners under the stars, or astronomy sessions that link what’s overhead with what’s underfoot and what’s within.

A small group glides through Kimberley’s rugged coastline by boat, passing ancient cliffs.

Explore with naturalists and historians by your side.

5. Relax in luxurious lodgings

Just because you’re off-grid doesn’t mean you have to rough it. These Kimberley vessels are small in size, but mighty in luxury. True North’s ships come with their own helicopters and a no-sea-days policy, so you’re always in the thick of it. Try the luxurious offerings from Ocean Dream Charters for exploration in style. Kimberley Quest offers a fast boat for easy, off-ship adventures. On the larger end of the scale, Coral Expeditions has open-deck bars and curated wine cellars. And then there’s Ponant’s luxury yachts sleek and incredibly stylish French sailing yachts.

A helicopter soars above the sea, with a sleek cruise ship gliding in the distance.

See the Kimberley from sky to shore.

6. The adventure continues with pre- and post-cruise experiences

You’ve already come this far – so, why not go further? Broome makes it easy to ease in before you board, or wind down when your voyage ends, and there is no reason to stop there.

Head an hour and a half south to Eco Beach to stay off-grid and off the clock. Join a Yawuru guide for a mangrove walk or ocean forage. Dive even deeper into Broome’s pearling past at Willie Creek or Cygnet Bay, where divers and craftspeople still pull the seawater-slicked gems from the deep.

If you’re still craving adventure, it’s time to go further. Soar over the Buccaneer Archipelago, or detour inland with a 4WD trip along the Gibb River Road. Book a scenic flight over the Bungle Bungles. Or – because you never know when you’ll be back – do all three.

aerial of people walking on eco beach in the kimberley western australia

Stay off grid at Eco Beach. (Image: Tourism WA)

Find out more about your trip to Australia’s North West at australiasnorthwest.com.