The village of AVEBURY stands in the midst of a stone circle that rivals Stonehenge – the individual stones are generally smaller, but the circle itself is much wider and more complex. A massive earthwork 20ft high and 1400ft across encloses the main circle, which is approached by four causeways across the inner ditch, two of them leading into wide avenues stretching over a mile beyond the circle. The best guess is that it was built soon after 2500 BC, and presumably had a similar ritual or religious function to Stonehenge. The structure of Avebury’s diffuse circle is quite difficult to grasp, but there are plans on the site, and you can get an excellent overview at the Alexander Keiller Museum, at the western entrance. The nearby Barn Gallery has an exhibition on Avebury and the surrounding country.