The earthwork Avenue was also built at this time, connecting Stonehenge with the river Avon.One of the last prehistoric activities at Stonehenge was the digging around the stone settings of two rings of concentric pits, the so-called Y and Z holes, radiocarbon dated by antlers within them to between 18 BC.
This idea, explained by Geoffrey of Monmouth in his ‘History of the Kings of Britain’ in 1136, was widely accepted until as late as the 16th century © British Library Board (Egerton MS 3028 fol 30) The small town of Amesbury is likely to have been established around the 6th century AD at a crossing point over the Avon.
A decapitated man, possibly a criminal, was buried at Stonehenge in the Saxon period.
In the early Bronze Age many burial mounds were built nearby.
Today, along with Avebury, it forms the heart of a World Heritage Site, with a unique concentration of prehistoric monuments.
The earliest surviving written references to Stonehenge date from the medieval period, and from the 14th century onwards there are increasing references to Stonehenge and drawings and paintings of it.