"The site construction at Thornborough is thought to have originated around 3500BC. It was used as a religious centre for at least 1,000 years after this point, perhaps even twice that long. The henges are believed to be one of the largest earthmoving projects undertaken by Neolithic man."

The only triple-henge in the world, it could be argued it matches the Orion layout found in Giza. Same time, same design...