The world's highest and steepest 'Sky Ladder' sits on Qixing Mountain in Zhangjiajie, China, where climbers tackle a near-vertical 80-degree ascent suspended around 5,000ft above ground. Stretching roughly 551ft, the ladder connects two sheer cliffs and forms part of an extreme via ferrata route built directly into the mountainside. 🎥 @world.from.my.eyes #china #ladder #skyladder #viral