when were the first stones put up at stonehenge
Stonehenge Archaeologists believe it was constructed from 3000 BC to 2000 BC. The surrounding circular earth bank and ditch, which constitute the earliest phase of the monument, have been dated to about 3100 BC. Radiocarbon dating suggests that the first bluestones were raised between 2400 and 2200 BC,[2] although they may have been at the site as early as 3000 BC.[3][4][5]