
This is a fascinating collection of monuments which includes four henges – the Church Circle, the South Circle, the North Circle and the Old Churchyard and a mass of bronze age burial mounds.
Unfortunately most of the site has been destroyed by centuries of ploughing but aerial photos show how important this ritual site was in neolithic times. There is evidence of further use in the bronze age, iron age and roman periods and more obviously in medieval times with the 12th century church being built in the centre of the henge.
http://www.english-heritage.org.uk/daysout/properties/knowlton-church-and-earthworks/history-and-research/
http://www.english-heritage.org.uk/professional/research/landscapes-and-areas/aerial-survey/investigations/knowlton-circles/