CentralNotice Silence From Wikipedia, the free encyclopedia Jump to: navigation , search Silence Before first ascent, the route was known as Project Hard Adam Ondra at the second crux of Silence , in 2017 Location Flatanger ( Norway ) Route Type Sport climb Vertical Gain 45 metres (148 ft) Pitches 1 Rating 9c (5.15d) Route Setter Adam Ondra First free ascent Adam Ondra , September 3, 2017 Silence (formerly known as Project Hard ) [1] is a famously difficult route located in Flatanger ( Norway ). As of november 2017, it is considered to be the hardest route ever climbed, and the world's only route with a proposed rating of 9c (5.15d). It was bolted in 2012 or 2013 [2] by Adam Ondra , who first ascended it in September 3, 2017. Ondra described it as "much harder than anything else" he had previously done, and cautiously suggested the...