Wave Rock is an unusual landform in southwestern Australia. It looks like a giant wave of water that is about to crash. This feature was caused by the erosion of soft rock below the harder top. It measures 14 meters high and 110 meters long.
http://www.waverock.com.au/rock.htm via The Presurfer | Photo by Flickr user tostao meravigliao used under Creative Commons license
For 60,000 years the Aboriginals didn't put up a fence......