West Woods is approximately 25 kilometers from Stonehenge. “I think we were dealing with a very organized society here,” said the study’s lead author, David Nash, about the site’s builders. Nash assumes that they have chosen the nearby location for pragmatic reasons.

A new technique enabled the team around Nash to use portable X-ray equipment to analyze the chemical composition of the rock, which consists of 99 percent silica and contains traces of various other sediments.