Avebury is less known than Stonehenge - but it's much larger than Stonehenge and one of the largest stone circles in the world!
It was only 1 day walk away.
It testifies to this frenzy of building activity in the region at the time.
Avebury is roughly 350m in diameter.
It has over 100 stones, organised in 3 stone circles - 2 stone circles surrounded by a larger one.
Like all these monuments, it would all have been dug using antlers and primitive stone tools.
It also has a large avenue leading to the river - an impressive flat band of land, 2.5 x 0.025km, with about 100 standing stones.
Closer to the river is another smaller circle : The Sanctuary.
Nobody knows what it was for but it was likely used for ritual purposes.
It combined standing stones and wooden posts.