The Fens
Reprinted in 1647 under title: "The Drayner confirmed, and the obstinate Fenman confuted.</ref> the area is now home to the lowest land point in the United Kingdom, Holme Fen in Cambridgeshire, at around 2.75 metres below sea level.  Within the Fens there are a few hills, which have historically been called "islands" as they remained dry when the low-lying fens around them were flooded. The largest of the fen-islands is the Isle of Ely, on which the cathedral city of Ely was built; its highest point is 39 m above mean sea-level.