Presenter Sian Eleri visits Parys Mountain in Anglesey, north west Wales, for a Green Space Dark Skies event – a mass participation project that celebrates the landscape and creates extraordinary artwork on it at dusk, using specially designed ‘geo-lights’. Becoming a ‘lumenator’, and joining hundreds of other volunteers, Sian talks to the people that created the project, as well as award-winning beatboxer and event performer Mr Phormula and geologist Professor... see more