Ebook: The Fenland Project, Number 6: The South-Western Cambridgeshire Fenlands

With contributions from David Gurney, Robert Middleton and Rog Palmer. Illustrations by Rog Palmer and Tim Malim, and photographs by David Hall and Cambridge University Committee for Aerial Photography.

The western part of Cambridgeshire has a varied range of fen types, from deep peat through marine deposits to the coarse silt fen at the north of Manea. There is a scarp of 37m on the western edge and low islands to the east; between them runs the main pre-Flandrian channel of the River Ouse. This took most of the upland water until the post-Roman period. Freshwater lakes were notable in the Middle Ages, Whittlesey Mere being the largest inland lake in England after Windermere.