The circles, which may have been used for festivals or rituals, at West Kennet near Avebury are now believed to have been built in 3300BC. New radiocarbon dating tests have been carried out by ...

The "surprising find" in Avebury, which is 30m (98ft) wide, is thought to be one of the site's earliest structures. The square of megaliths appears to have been erected around the remains of a ...