About Mammoth Cave
Mammoth Cave is a large limestone cave in Leeuwin-Naturaliste National Park on Caves Road at Boronup, within the Shire of Augusta Margaret River, Western Australia. Known for its vast chambers, impressive stalactites and stalagmites, and fossil deposits of long-extinct Australian megafauna, it offers a self-guided audio tour along boardwalks. Set within Boranup Karri forest, it is one of the region's most accessible and visited show caves south of Margaret River.
Visitors guide
Visitors can expect a self-guided audio tour along well-maintained boardwalks and platforms through large, well-lit chambers featuring stalactites, stalagmites, flowstone and fossil deposits. The cave is set in Boranup Karri forest within Leeuwin-Naturaliste National Park. The tour includes informative audio commentary via headset, fossil exhibits, and views of the vast central chamber. Above ground there is forest surroundings, picnic area and visitor facilities.
Key highlights
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Self-guided audio tour with headset commentary
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Vast chambers with stalactites, stalagmites and flowstone formations
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Fossil deposits of extinct Australian megafauna including giant kangaroos and thylacoleo
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Boardwalk access through 300 metres of cave passages
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Located within Boranup Karri Forest in Leeuwin-Naturaliste National Park