Of the three hillforts Cherry Hinton being one of them, Wandlebury was the most important. The site altitude is above sea level. There are at least two theories regarding why the Wandlebury Hill Fort was built on this site: it may have been chosen because of its tactical grounds, or because it would be the last fortress in a line which controlled the Thames-Stort-Cam Valley route. Wandlebury overlooked the ancient Icknield Way. The meeting point of the hundreds of Thriplow, Chilford, and Flendish is adjacent to Wandlebury.