Sunset 12 Apostles, Photograph by Ken Duncan, image comes with facsimile signature by Ken Duncan in silver foil situated on bottom right of image.
The Twelve Apostles were formed by erosion. The harsh and extreme weather conditions from the Southern Ocean gradually erode the soft limestone to form caves in the cliffs, which then become arches that eventually collapse, leaving rock stacks up to 50 m (160 ft) high.
