Scientists have found more about who built the 5,000-year-old Stonehenge - the world-famous ancient stone monument in England. It has been a mystery for thousands of years. Scientists say the builders of Stonehenge could have come from Wales, 160 kilometres away. Researchers said the human bones they found at Stonehenge were from mountains in Wales. The oldest human remains found date back over 5,000 years.
Stonehenge is a ring of giant stones. Each stone is four metres high and weighs 25 tons. Scientists say Stonehenge was a burial mound. They are not sure how people moved the giant stones from Wales to Stonehenge. They believe people buried at Stonehenge helped transport the stones. A researcher 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."