Falkner's Circle was a stone circle near the village of Avebury in the south-western English county of Wiltshire. Built from twelve sarsen megaliths, it measured about 37 metres (121 ft) in diameter, although only one of these stones remains standing. The ring was part of a tradition of stone circle construction that spread throughout much of Britain, Ireland, and Brittany during the Late Neolithic and Early Bronze Age, over a period between 3300 and 900 BCE. The purpose of such monuments is unknown, although archaeologists speculate that the stones represented supernatural entities for the circle's builders.