Lake Clifton Thrombolites

****Alerts & Notifications****

The Thrombolites Boardwalk is CLOSED from Monday 13 July 2026 until further notice to facilitate the removal of the existing boardwalk and construction of a new boardwalk.

The boardwalk will remain closed until declared safe. For your safety, adhere to and follow all signage and instructions from Parks and Wildlife and other staff.

Access to the Lakeside Loop Trail, the Mandurah Giant and the car park will remain open for the duration of the project.

Walkers should be aware of construction vehicles and other traffic in the area. 

For further information, please view alert or contact the Parks and Wildlife Service Mandurah office on (08) 9303 7750.

Located within Yalgorup National Park, just south of Mandurah, the ancient thrombolite reef at Lake Clifton offers a rare glimpse into Earth’s earliest days. These fascinating, rock-like formations are among the planet’s oldest life forms, dating back approximately 570 million years, producing oxygen that paved the way for all subsequent life. 

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The Lake Clifton thrombolites, around 2,000 years old, form the largest thrombolite reef in the southern hemisphere. From the boardwalk over the lake, you can observe these formations up close—especially between January and May, when low water levels provide the best view.

For a truly memorable experience, consider a guided tour to uncover the incredible history and cultural significance of these ancient wonders—a journey into the origins of life itself!