Wave Rock, a granite cliff, is 15 metres high and 110 metres long. Its rounded shape has been caused by weathering and water erosion which has undercut the base and left a rounded overhang. This happened about 60,000,000 years ago when it was exposed. Water from the springs running down the rock during wetter months dissolve minerals adding to the colouring of the wave. In 1960, some crystals from Hyden Rock were dated as being 2700 million years old, amongst the oldest in Australia. |