Stonehenge’s ‘altar stone’ originally came from Scotland and not Wales, new research shows The Associated PressA Scottish provenance for the Altar Stone of Stonehenge Nature.comStonehenge megalith came from Scotland, not Wales, ‘jaw-dropping’ study finds The GuardianFor Stonehenge’s Altar Stone, an Improbably Long Ancient Journey The New York TimesStonehenge’s Strangest Rock Came from 500 Miles Away Scientific American