On March 21, he free soloed up—and down—a 5,000-foot rock climb called Afanassieff on Fitz Roy in around 15.5 hours—a physically and mentally exhausting period of time to be in such an ...

Mount Fitz Roy, which typically stands obscured in a haze of clouds, was originally named "Chaltén," meaning "smoking mountain" in the ancient Tehuelche tribe's dialect. Today, its title ...