Squamish-based climber Stu Smith said Berthod is a "climbing hero" and the crack is one of the most difficult in the world. "Pretty amazing he pulled it off," Smith said in an Instagram message.

In 2006 Cobra Crack at the Cirque of the Uncrackables above Squamish, Canada, was hailed as the hardest pure crack climb in the world. The overhanging, 30m high finger crack had originally been ...