‘The World’s most dangerous hike’… the marketing pulled me in and before I knew it, it was going to be the centrepiece of a 11 days trip through China. Situated on Mount Hua, one of the 5 great mountains of China, close to Xi’an, well by Chinese standards anyway, ‘the plank walk in the sky’ is a 40 to 50m walkway on a couple of 2×4’s bolted to the side of a vertical face, above a 1000m metre drop….. Where do I sign up….