"A team of archaeologists, led by Mike Parker Pearson of University College London, has unearthed Britain’s third-largest stone circle in the Preseli Hills of western Wales that they believe was dismantled, moved 175 miles to England's Salisbury Plain and rebuilt as Stonehenge, according to research
to be published Friday in Antiquity, a peer-reviewed journal of archaeology."
It would be interesting to see if they had to move their henge to keep up with the sun's journey southward over the millennia. For example, 8,000 years ago the Earth's tilt was larger and the summer solstice was over 24 degrees above the equator. Its around 23.44 today. Imagine the people who built these structures fretting over the fact all their hard work was being ruined by a wandering sun. They just didn't migrate, they moved their sacred stones too.
edit; that link isn't working, maybe it will when the article is published.
Now all we need is a resident mathematician to calculate the distance from the older site to Stonehenge and compare it to the changing solstice.
oops, the article says 175 miles between the 2 sites, but I think Stonehenge is SE of the older site. so maybe around 160 miles.
And the Earth is about 25k around the poles so thats about 12,500 mi divided by 180 degrees or about 70 mi/degree.
That cant be right, that would be closer to 2 degrees. So much for that idea.