'How I climbed the world's hardest cliff'
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Rock climber Adam Ondra: 'How I climbed the 'world's hardest cliff'

Rock climber Adam Ondra tells the BBC World Service's Ben James how he conquered the 'world's hardest cliff' in Flatanger, Norway.

Video produced by Robert Spencer and Trystan Young.

Listen to BBC World Service's Newsday programme on the iPlayer.

  • 08 Sep 2017
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