His mother, Jeanine Girard-Moorman, confirmed the news in posts on social media.“It is with a heavy heart I have to tell you my incredible son Balin Miller died during a climbing accident today,” she wrote. “My heart is shattered in a million pieces.”Details of the accident remain unofficial, but Yosemite photographer Tom Evans, who chronicled Miller’s progress, said the 23-year-old was attempting to free a haul bag stuck below his anchor. According to Evans, Miller descended his rope without realising it would not reach the bag’s location.