Overview

Most Canberrans know Mulligans Flat Woodland Sanctuary for its wildlife and conservation success stories. A new self-guided Geoheritage Trail reveals an even older story—one that stretches back 430 million years.

The free self-guided 7-kilometre trail reveals the ancient stories hidden beneath the woodland that was once a tropical marine world long before the dinosaurs existed. Explore seven interpretive stops that connect fascinating geological features with Ngunnawal cultural heritage, unique ecosystems, and the history of European settlement.

Along the way, uncover evidence of a tropical coral reef that once covered Canberra, discover fossils of ancient marine creatures, learn how volcanic activity and tectonic forces shaped the landscape, and see how geology influences the ecosystems and waterways of the Sanctuary today. The trail also highlights the enduring connection of the Ngunnawal people to Country through their use of local stone and ochres for tools, trade and cultural practices.

Suitable for walkers, families, school groups and nature enthusiasts, the trail combines science, culture and storytelling in an engaging outdoor experience. Visitors can explore at their own pace using interpretive signage and QR-code linked online resources while enjoying the Sanctuary's nationally significant woodland environment and abundant wildlife.