Mammoth Cave

Useful Information

Location: Caves Road, Forest Grove WA 6285.
21 km south of Margaret River.
(-34.058684, 115.029529)
Open: All year daily 9-17, last entry 16.
Closed 25-DEC.
Fee: Adults AUD 22.50, Children (4-16) AUD 11.50, Seniors AUD 20.
Classification: SpeleologyKarst cave
Light: LightIncandescent Electric Light System
Dimension: T=20 °C.
Guided tours: L=570 m, D=60 min, self guided, MinAge=4, Min=2. MP3 available in English Deutsch - German Français - French Bahasa Malaysia Chinese
Photography: allowed
Accessibility: wheelchair access to first chamber
Address: Your Margaret River Region, 100 Bussell Highway, Margaret River WA 6285, Tel: +61-8-9757-7411. E-mail:
Mammoth Cave, Caves Road, Forest Grove WA 6285.
As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
Please check rates and details directly with the companies in question if you need more recent info.


1850 first recorded.
1895 explored.
1904 opened to the public.
1928 Mammoth Cave Rotunda at the entrance.
1996 reconstruction of the rotunda in the original position.


Mammoth Cave is the longest running tourist cave still in operation in the area. It is also the biggest of all tourist caves between Margaret River and Augusta. A short passage leads to a huge chamber with only little decorations. Further inside the cave the number of speleothems increases, but this is not a dripstone cave.

The tour through Mammoth Cave focuses on cave palaeontology and geomorphology in the region. Palaeontological work carried out in Mammoth has revealed specimens of many of the extinct megafauna, some are over 35,000 years old. Some 10,000 fossils were excavated in the cave. The remains of a Tasmanian Tiger (Thylacinus cynocephalus) were dated at 25,000 BP. Also a 50,000 year old zygomaturus jawbone that is embedded in the cave wall. There are no guided tours but visitors get a MP3 audio self-guiding system.