Only one stone, known as Adam, remains standing and even in William Stukeley's time (early 18th century) there was little evidence on the surface of the avenue.

Excavations by the University of Southampton in 2000, however, revealed the parallel rows of holes that held the stones.

Stukeley's theory was that the two avenues were part of a giant 'snake' winding across the landscape with its head at The Sanctuary and also incorporating the Avebury monument.

The avenue may have originally extended further past the Longstones, with Adam being part of the 'cove' or standing stone arrangement sited along its course.

Eve is a known part of the avenue leading back to the western gateway of the henge, which included what is now the village high street.