About 10 or 20 million years, the limestone rock that would form a great plain bridging the present-day Australian states of Victoria and Tasmania began forming from marine skeltons, like shellfish and calcium rich algae. About five million years ago, the sea level dropped and the plain was exposed; as the sea began rose again 18,000 years ago, the spectacular cliff formations you can see now on the southern coast of Australia west of Melbourne began to be formed by the battering of waves and the seepage of rain through the limestone.
- Learn about local Port Campbell legends, like the Loch Ard shipwreck tale
- See Port Campbell on a Great Ocean Road Map
- Check out a Great Ocean Road tour planner