Stones Close-up

The biggest of its stones, known as sarsens, are up to 30 feet (9 meters) tall and weigh 25 tons on average. It is widely believed that they were brought from Marlborough Downs, a distance of 20 miles (32 kilometers) to the north. Smaller stones, referred to as “bluestones” (they have a bluish tinge when wet or freshly broken), weigh up to 4 tons and most of them appear to have come from the Preseli Hills in western Wales, a distance of 156 miles (250 km). It’s unknown how people in antiquity moved them that far; water transport was probably used for part of the journey.