Lake Thetis Loop Trail
  • Length: 1.5km

  • Duration: 0.5hrs

  • Grade: 2

  • Style: Circuit

  • Start: Hansen Bay Road

  • End: Hansen Bay Road

  • Location: Cervantes

  • Closest Town:

  • Distance from CBD: 200km

  • State: WA

  • Latitude: -30.50646086

  • Longitude: 115.0782736

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2WD Access

4WD Access

Public Transport

Bitumen Road

Gravel Road

Steep Road

Winding Road

Speed Bumps

Vehicle Ford

Entry Fee

Large Car Park

Small Car Park

Accessible Parking

Accessible Toilet

Public Toilets

Drinking Water

Untreated Water

Picnic Shelter

Picnic Table

BBQ Facilities

Campfire Pit

Camping Area

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Concrete Path

Timber Boardwalk

Gravel Path

Sandy Trail

Rough Trail

Undefined Trail

Prams & Strollers

Manual Wheelchair

Motorised Wheelchair

Bicycle Trail

Mountain Bike Trail

Historic Rail Trail

Dog Friendly

Urban Walk

Coast & Beach

Historic Lighthouse

Waterfalls & Lakes

Rainforest Walk

Goldfields & Mining

Heritage Walk

Aboriginal Art

Alpine Region

Alpine Huts

Exposed Ledges

Rock Scrambling

Steep Terrain

Bush Bashing

River Crossings

Scenic Viewpoints

Well Marked

Drinking Water

Untreated Water

Fishing Spots

Swimming Spots

Overnight Campsites

Trail Running

Horse Riding


Lake Thetis Loop Trail is a 1.5km, grade 2 circuit hike, located in Cervantes, Western Australia. The hike should take approximately 0.5hrs to complete.

Hike Summary

Lake Thetis Loop Trail is an easy, 1.5km walk around the shores of Lake Thetis. It is one of only a few places in the world with living marine thrombolites, or 'Living fossils’. The first 300m of Boardwalk, which passes the best examples of thrombolites in the lake, is universally accessible.

Enjoy an easy 1.5km loop walk around Lake Thetis and gain an insight into what life was like at the dawn of time. Like the famous stromatolites of Hamelin Pool, in Shark Bay, these rock-like structures on the edge of Lake Thetis are built by micro-organisms too small for the human eye to see. Within the structures are living communities of diverse inhabitants with population densities of 3000 per square metre! The thrombolite-building micro-organisms of Lake Thetis resemble the earliest forms of life on Earth. The discovery of modern examples helped scientists to understand the significance of micro-organisms in the environment and unravel the long history of life on Earth. Today living examples of these once completely dominant organisms are restricted to only a few places.  

About the region

The cray fishing town of Cervantes is your gateway to another world, the Pinnacles Desert of Nambung National Park. Regarded as one of Australia's most unique landscapes, you could almost believe you are walking on the moon as you follow the trail, passing thousands of limestone spires rising eerily out of the shifting sand. You can get to Cervantes in just over 2 hours from Perth's northern suburbs, following the scenic Indian Ocean Drive, or by hopping aboard one of the many day tours that regularly depart from Perth. The town itself was established in 1962 to accommodate workers in the local cray fishing industry and got its name from the American whaling ship 'Cervantes' that was wrecked here in 1844.


Start Point: Just off Hansen Bay Road, 1km from Cervantes town centre. 3 hours drive north from Perth.

End Point: Just off Hansen Bay Road, 1km from Cervantes town centre. 3 hours drive north from Perth.

Region: Cervantes, Coral Coast

For more information, a location map and GPS file please visit Trails WA. 

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