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100mph zip line opens at Penrhyn Quarry, Bethesda

21 March 2013 Last updated at 21:30 GMT

A new zip line is opening in Gwynedd, designed to carry people at speeds of more than 100mph (161km/h).

BBC Wales' Cemlyn Davies bravely went along to the home of the northern hemisphere's longest zip line at Penrhyn, Bethesda.