Pirmin Bertle frees two 9a's at Charmey
At the Swiss crag Charmey Pirmin Bertle has freed Chromosome X and Chromosome Y, two routes both graded 9a.
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IMAGE - Pirmin Bertle, © archivio Pirmin BertleNEWS Related
At the Swiss crag Charmey Pirmin Bertle has freed Chromosome X and Chromosome Y, two routes both graded 9a.
