Keyword: hardest boulder

These are the most difficult boulders in the world

We have compiled a list of the most difficult boulders in the world from difficulty level 8C+. There are currently five 9A boulders: Alphane, Megatron, Return of the Sleepwalker, Burden of Dreams and Soudain Seul, with Alphane and Burden of Dreams being the only ones that have been repeated and graded.

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