This is the Wave Rock (Rock Ola) in Australia. Believed to be one of the oldest rocks on Earth, with million years. Its distinctive shape is caused by erosion of 60 million years. Photo: Getty Images rocks-minerals-gems-and-geology
Jarlshof is the best known prehistoric archaeological site in Shetland, Scotland. - Described as "one of the most Remarkable Archaeological Sites ever excavated in the British Isles", it contains Remains dating from 2500 BC up to the century AD.