In this volume Iain Sinclair sets out to map the vast stretch of urban settlement outside London bounded by the M25. His long journeys - from the Lea Valley to Uxbridge, from Staines to South Mimms - are flanked by the black clouds of smoke from burning carcasses as the foot and mouth panic takes hold. Here he uncovers a history of forgotten villages, suburban utopias and hellish asylums, now transformed into upmarket housing, all the while walking a disappearing landscape, as the countryside is engulfed by commerce.