Beneath their huge and spectacular skies, the Fenlands of East Anglia are in dynamic flux. Emerging as dense woodland from the retreating glaciers of the last ice age, the forests were drenched beneath a rising water table to become a vast, impenetrable wetland teeming with life. These swamps were inhospitable to most but provided refuge for rebels, outcasts and warriors such as Boudicca and Hereward the Wake. Now this wet wilderness has, over...