Immaterial Terrain is a film made by Emily Richardson along a seven-mile stretch of the Suffolk coast between Sizewell nuclear power station and the mythic drowned city of Dunwich. Camera in hand, over the duration of a year Richardson repeatedly walked this coastline. These walks – pilgrimages and acts of protest – structure a film that documents a singular and fragile landscape at an uncertain moment. Plans to expand the nuclear power station at Sizewell will have a lasting impact on the environment.