On our great ocean road day tours you will learn how our inspiring coastline was formed. Beginning 60 Million years ago the Great Southern Ocean would rise above the land and would begin the silification and calcification of the earth. For millions of years the 12 Apostles coastline formed under the weight of the Ocean. When the southern ocean ocean peaked approximately 3 millions years ago it was 150m deeper than what you can see today. For 59 Million years the ocean would be creating the limestone we see in our cliff faces today....To hear the full story join our Great Ocean Road Day tour.