Australian The Twelve Apostles is a collection of limestone stacks off the shore of the Port Campbell National Park, by the Great Ocean Road in Victoria, Australia. Their proximity to one another has made the site a widespread visitor attraction. Presently there’re eight apostles left but the name remains important and remarkable especially in the Australian tourism industry. The apostles were formed by erosion due to the harsh and extreme weather conditions from the Southern Ocean gradually eroded the soft limestone to form caves in the cliffs, which then became arches, which in turn collapsed; leaving rock stacks up to 45 metres high. Now because of this erosion there’re less than ten remaining.