This week's video comes from Verzasca Dam in Switzerland, the site of Red Bull's recently held multi pitch climbing competition, the Dual Ascent. Our video pick follows Bouldering Bobat as they take on this insane challenge alongside a host of other professional climbers. At a daunting 220 metres in height, the dam is massive and consists of 6 pitches. During Red Bull's event, two teams of professional climbers race side by side up identical routes from bottom to top. Here, Bobat are on the warm up route and even this looks incredibly tough, check it out!