The Greenham Common Peace Camp was one of the longest political demonstrations in history. Established in 1981 when 36 women from Cardiff marched to an RAF base in Berkshire to protest against nuclear weapons it grew exponentially - despite being dismissed as 'an eccentricity' by Thatcher in 1983 it was to last for 20 years. Across those two decades the women of the camp experimented with new ways of living, organising and effecting change, exemplified by the 'Embrace the Base' campaign where 30,000 women were mobilised via chain letter to encircle the base in peaceful protest. The numbers of women, methods and make-up of the camp ebbed and flowed but a singularity of purpose remained. Drawing on a unique collection of interviews, scores of unheard voices are gathered together and interwoven with an exploration of the key elements that shaped the movement.