This man conquered the world's hardest cliff in 20 minutes!
pic.twitter.com/AqN1EwoyWw
A man climbed the world's hardest cliff in 20 minutes
Adam Ondra, a 24-year-old professional climber, managed to climb what is considered by many climbers the wold's hardest cliff, the granite cave in Flatanger, Norway.
4:23 PM - 24 Nov 2017
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