Construction of a water supply pipeline in Cambridgeshire provided an opportunity to sample the prehistoric landscape along a transect that crossed several major geological boundaries. This narrow window ran from the Lower Chalk of the ancient peninsula of Isleham, across the heavy low-lying clays of Soham and down into the peat fen of Stuntney and south-east Ely. Within the constraints set by the development, field investigation and subsequent analysis were conducted at several scales. In the initial stage, attention focused on predicted occupation areas (principally at the fen margins),...