The Rock Bottom Line, the longest sport climb in the UK
In Twll Mawr in the Dinorwig slate quarry in Wales Ian Lloyd-Jones and Sion McGuinness have established The Rock Bottom Line (130m, 7b+).
In Twll Mawr in the Dinorwig slate quarry in Wales Ian Lloyd-Jones and Sion McGuinness have established The Rock Bottom Line (130m, 7b+).