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Failing to see your point, Tom.
Are you a supporter of the theory that people settled in Britain crossing a land mass from Gaul? Can you prove then that this land connection existed about 5,000 years ago?
Geology does not confirm this.
As for archaeology, the oldest human settlements in the British Isles are reckoned to be no older then 5,000 and a few hundred years.
Personally I believe history in Britain and Ireland starts with the Neolithic Stone Age, and that the Megalithic and Paleolithic Ages never existed anywhere on Earth.
The fact is, a stone is possibly millions of years old, and it is not possible on the mere evidence of a group of erected stones to determine the period when they were set up, as there is no wood structure (wood can be dated, albeit with limits).
The oldest known stone townships on our Isles are on Orkney, one being a village estimated to be 5,200 years old,, the other being Knap of Hower, about 5,600 years old.
These were inhabited households. Neolithic and all.
Orkney surely was not connected to Norway??
The inhabitants would have come from the Scottish mainland. There forefathers would have moved up North from southern Britain, gradually, over a period of many centuries.
My theory is that settlement in Britain and Ireland started in Kent, which is close enough for the small sea vessels of that time to cross from Gaul.
Dover has a proven track record dating to 3,850 years back. The absence of stone circles in Kent from earlier times may simply be because Kent is mainly chalk land and has no mountainous regions with large stones.
However, your link failed yo mention some famous Kentish caves that were subject to human activity in very ancient times.
See also: The British Isles in the Neolithic Stone Age. It has interesting links supplied to sites such as Stonehenge (English Heritage), Brin Celli Ddu (Anglesey), Newgrange (Mythical Ireland) and the Orkney Islands (Orkneyjar).
You won't miss it as it's page 1 on Google.