Mystery of sacred site shaped by stars Thornborough is the only triple henge complex in the world and the only one to share the same astronomical alignment as the pyramids at Giza in Egypt. A recent theory is that the henges' alignment may follow that of Orion's Belt in the constellation of Orion. The site, which may have been chosen because of its proximity to the River Ure, was first used about 3500BC and it continued to be a centre for religious ritual worship, drawing pilgrims from across the North, at least until 2500BC. The henges are one of the...