Open Country

The landscape of Dungeness, at the south-eastern tip of England, is an unusual one. In this programme, Helen Mark finds out about stories surrounding sound and light on this peninsula which juts out into the English Channel. She visits the huge concrete "sound mirrors" - built in the 1920s as an early detection system for incoming enemy planes. Their technology became obsolete as aircraft speeds increased and radar was invented. They still stand today, but are now part of a nature reserve. Helen finds out how they worked, and experiences for herself their eerie sound projection abilities. She also learns about the wildlife which now thrives around them.A few miles further south, Helen visits the old lighthouse - one of five lighthouses which Dungeness has had in its time. The area stands on vast ever-shifting banks of shingle, which have expanded seawards over the years, leaving previous lighthouses stranded too far from the sea. The construction of a nuclear power station in the 1950s also obscured the light