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Unlike the hard beach stones used at the nearby Neolithic village of Skara Brae, the stones used in the Ness buildings were quarried.

Scottish locations with the Unesco status include the St Kilda archipelago, Skara Brae prehistoric village and the Antonine Wall.

A lover of Ancient Egypt, Steven wanted to explain how the Pyramids were built - but believes his theory also sheds light on how stone circles were created on various sites, from Orkney's Skara Brae to Stonehenge.

“So the risk to sites like Skara Brae and other sites around Orkney, it’s real, it’s here, it’s happening. But it shouldn’t all be doom and gloom and despair. There is an opportunity to still do something about it and to avoid the worst possible consequences of climate change,” he added.

Arguably the most famous site of Orkney is Skara Brae.