6/13. Beautiful but troubled, Northern Ireland's coast has had a turbulent history for more than 2,000 years. Nicholas Crane et al take in the history as they cycle Antrim's coast road, dive Strangford Lough and step across the Giant's Causeway. Continues on Friday at 9pm. Series producer Steve Evanson ; Series editor Gill Tierney
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INTERACTIVE: short films, information on 39 coastal walks around Britain (12 with mobile-phone commentary), plus how to sign up for free local guided walks are available via the red button. Details of the walks are also available at [web address removed] or by calling the information line on [number removed] (national rate)