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Hubble was the hardest route in the world when Ben Moon completed the first ascent in 1990, and the first route to be graded 8c+ (5.14c). Since then it’s been upgraded to 9a (5.14d), meaning it very well might’ve been the world’s first 9a (5.14d)—beating out Action Directe, which Wolfgang Güllich redpointed in 1991. In this video, Buster Martin attempts to climb Hubble at Raven Tor in England’s Peak District and discusses the route’s grade history with Moon himself.