Scientists say they found details about who built the 5,000-year-old Stonehenge. The ancient stone monument in England is famous all over the world. How it was built has been a mystery for thousands of years. Scientists say the architects and builders of Stonehenge could have come from Wales, more than 160 kilometres away. Researchers wrote that human bones found at Stonehenge were from mountains in west Wales. The researchers said the oldest human remains found date back to about 3000 BC, which is over 5,000 years ago.
Stonehenge is a ring of giant standing stones. Each stone is four metres high and 2.1 metres wide. They each weigh 25 tons. Scientists say Stonehenge was used as a burial mound. They are not sure how ancient people moved the giant stones from Wales to Stonehenge. They believe the people they found buried at Stonehenge helped transport and put up the stones. Researcher John Pouncett said: "People from the [Welsh mountains] not only supplied the bluestones used to build the stone circle but moved with the stones and were buried there too."