Stonehenge Built From An Earlier Stone Circle?

Stonehenge might have been built from an earlier stone circle: Waun Mawn in west Wales. Stonehenge’s majestic bluestone pillars had already been traced to their source. The stones were excavated from quarries in Wales as early as 3400 BC, about 500 years before Stonehenge was built. Now, researchers have used carbon dating and other techniques to suggest that similar stones that once stood in Waun Mawn were removed at just about the time the first construction at Stonehenge began. The findings further develop a picture of an interconnected society centered on the Irish Sea that flourished in the fourth century BC.