Lake Thetis

For a trip back in time, make sure to visit Lake Thetis, home to the oldest living fossils on the planet! The Stromatolites are estimated to be over 3,000 years old and can be viewed throughout the entire year from the Lake Thetis boardwalk. Just south of Cervantes, you’ll find these fossils, which were formed by organisms similar to the earliest forms of life on Earth! While the lake is poor in nutrients, it serves as the perfect habitat for bottom dwelling microbial communities. A few crustacean species, small fish and amphipods have adapted to the highly saline conditions. Enjoy a stroll along the boardwalk to see these strange looking living rock formations.