Stonehenge Construction Begins

Around 3100 BC, Neolithic people began construction of Stonehenge on Salisbury Plain in southern England, starting with a circular earthwork enclosure. This marked the first phase of what would become one of the world's most famous prehistoric monuments, which continued to be developed and modified until about a thousand years later. The site would eventually feature massive sarsen stones from the Marlborough Downs and smaller bluestones transported from the Preseli Hills in Wales.