The roll call of these lost lands and sunken cities, and the fate of once-thriving coastal towns such as Dunwich and settlements such as Caer Arianrhod and the lost Lowland Hundred of Cantref y Gwaelod, challenge us to reconsider whether the lost land of Lyonesse, which once extended from Land's End to the Scilly Isles, existed solely in Arthurian legend. The underwater forests of Wales, Norfolk and Sussex, and the lost Saxon cathedral off Selsey Bill are among the many lost lands of Britain described here. Revised edition.