Stonehenge’s giant Altar Stone may be proof that ancient Britons pulled off one of prehistory’s most astonishing long-distance transport feats. Credit: Shutterstock A new study led by researchers at Curtin University offers fresh insight into one of Stonehenge's most enduring mysteries: how a massive stone made its way across Britain to become part of the famous monument. The focus of the research is the Altar Stone, a six-ton sandstone megalith located at the center of Stonehenge. Previous