Mammoth Cave
Roam through a natural time capsule, once home to ancient fossil remains of long-extinct Australian Megafauna.
Roam through a natural time capsule, once home to ancient fossil remains of long-extinct Australian Megafauna.
Caves Rd, Forest Grove WA 6286
Self-guided | Allow 1 hour
Tickets
Adult (Age 17+)
$26
Senior (65+)
$24
Child (Age 4 - 16)
$13
Child (Age 0 - 3)
Free
Opening Hours
Monday - Sunday
9:00am - 5:30pm
Last entry: 4:30pm
School & Public Holidays
Open 7 Days
Closed Christmas Day
Uncover the histories of ancient Australian Megafauna while surrounded by the beauty of Boranup Forest.
Nestled within the stunning karri and marri forest of Margaret River, Mammoth Cave is a site of incredible natural and historical significance. Once home to Australia's megafauna, giant animals that roamed the Earth before their extinction 46,000 years ago, the cave offers a fascinating glimpse into the past.
What can I expect?
Explore Mammoth Cave on a self-guided audio tour, allowing you to discover the cave at your own pace while learning about its natural history and ancient fossil remains. Audio guides are available in English, French, German, Malay, and Mandarin.
A gently sloping boardwalk and stairs guide you through the vast chambers, where crystal formations, including stalactites and stalagmites, adorn the cave walls.
Don’t miss one of the cave’s most remarkable features, the 50,000-year-old zygomaturus jawbone, still embedded in the cave wall. This fossil belonged to a giant wombat-like herbivore that once roamed the forests of Western Australia.
As you exit the cave, the experience continues with a peaceful wander through the towering Boranup Forest, a tranquil way to finish your journey through one of the Margaret River Region’s most extraordinary natural environments.
- Pack a water bottle, but no other food or drinks are allowed inside the cave.
- Please wear comfortable shoes and clothing suitable for walking stairs.
- The caves are delicate and fragile. For conservation and safety reasons, we encourage you to limit the items you bring inside. Please leave backpacks in the car.
- Front-worn baby carriers are great for adventures but backpack baby carriers are not permitted.
- It’s a self-guided experience that includes 370 steps, all of which you can walk at your own pace. There are plenty of rest stops and platforms along the boardwalk allowing you to pause as needed.
- We welcome visitors of all abilities. Wheelchair access is available to the first chamber of the cave (approximately 30 metres) and is free of charge. Please call us for more information.
- If you’d like to learn more about the site accessibility, see the Visitor Access Guide for Mammoth Cave
Each of the Margaret River Region’s show caves offers something different. Over 10, 000 fossils were discovered at Mammoth Cave. Witness the 50,000-year-old zygomaturus jawbone still embedded in the cave wall, along with other ancient megafauna fossils on display.
In late winter and spring, you may see a seasonal stream flowing through the cave. Also at this time of year, there are unique wildflowers and rare orchids blooming on the walking trail at the cave exit. Our multilingual audio guide allows you to explore these wonders at your own pace, while learning about the cave’s history.
A visit to Ngilgi Cave is completely self-guided, and our Jewel Cave and Lake Cave experiences are fully guided.
- For school groups, find out more on our education page
- For trade inquiries, contact us for more information.
Amenities:
No Cafe
Gift Shop
Walk trail
Toilets
Access:
Wheel chair
No Prams
Can I bring:
Camera
No Dogs
No Drones
No Caravans
Suitable for:
Kids
Seniors
About Mammoth Cave
Stalagmites, stalactites, underground streams and sunken forests, some of the Margaret River Region’s most compelling landscapes, lie just beneath the surface.
Explore our cave guide to discover which underground experience is right for you.
Mammoth Cave is located within the Leeuwin-Naturaliste Ridge, a limestone formation approximately 90 kilometres long and 3 kilometres wide.
Formed over the past million years, the ridge is made primarily of Aeolian calcarenite—a type of limestone that began as coastal sand dunes, seashells, and coral, blown inland by strong westerly winds and gradually cemented by rainwater. Today, this landscape of limestone has been shaped by water and time into dramatic ridges, cliffs, and the caves we explore.
Inside the caves, you’ll find intricate natural features known as speleothems (pronounced spe-leo-thems). These formations include straws, stalactites, stalagmites, columns, shawls, helictites, and flowstone. All speleothems are made from calcite, a crystalline form of calcium carbonate.
As rainwater seeps through the limestone, it dissolves small amounts of calcium carbonate. When this mineral-rich water enters a cave, it begins to deposit calcite crystals, slowly building the stunning decorations that line the cave walls and ceilings today.
