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Watch Pirmin Bertle Send New 5.15, Switzerland’s Hardest Route

Pirmin Bertle made the first ascent of Meiose 5.15b at La Tribune, Charmey, late in 2015. Bertle linked 25 moves with V14 difficulties to create the hardest route in Switzerland. The route links the cruxes of the routes Chromosome X and Chromosome Y. Watch the send below.