Rock climbing in Yosemite re-entered the spotlight recently with documentary movies like Free Solo and Dawn Wall. In Free Solo, Alex Honnold’s ropeless ascent of El Capitan more than earns its acclaim from the sheer audacity of tackling such a long and difficult climbing route without any protection – never mind the amazing storytelling by climbing filmmakers Jimmy Chin and Elizabeth Chai Vasarhelyi. Meanwhile, in the Dawn Wall story, the...