Newmarket Ridge
The Newmarket Ridge is a ridge of low chalk hills extending for over 20 miles, from Bishop's Stortford in Hertfordshire to Bury St Edmunds in Suffolk, passing through the south-eastern corner of Cambridgeshire.
The highest point of the Ridge is Great Wood Hill at Rede ([TL786558 TL786558]), the highest point in Suffolk.
The hills in this region tend to have quite steep sides but very flat tops, leading to very low topographic prominence. A case in point is Biggin Common, near the village of Castle Camps, where Cambridgeshire's couty top is found. Despite being a prominent landmark and the highest point for nearly 15 miles in every direction, its prominence is only 20 m to the marginally higher Great Wood Hill, 18 miles away, the hills being connected by a ridge of very little change in height.