Balin Miller, 23, died in a climbing accident on Wednesday, his mother Jeanine Girard-Moorman confirmed.

“He’s been climbing since he was a young boy,” she said.

Many posted tributes to Miller on social media, saying they had watched him climb on a TikTok livestream for two days before his death and referring him to “orange tent guy” because of his distinctive camp setup.

Earlier this year, an 18-year-old from Texas died in the park while free-soloing, or climbing without a rope, on a different formation. In August, a 29-year-old woman died after being struck in the head by a large tree branch while hiking.

While it’s still unclear exactly what happened, his older brother, Dylan Miller, said Balin was lead rope soloing — a way to climb alone while still protected by a rope — on a 730-metre route named Sea of Dreams.

He had already finished the climb and was hauling up his last bit of gear when he likely rappelled off the end of his rope, Dylan said.

Miller was an accomplished alpinist who had already gained international attention for claiming the first solo ascent of Mount McKinley’s Slovak Direct, a technically difficult route that took him 56 hours to complete, he posted on his Instagram in June.

He grew up climbing in Alaska with his brother and their father, who was also a climber.

While Dylan took a little more time to fall in love with the sport, it stuck with his younger sibling instantly.

“He said he felt most alive when he was climbing,” Dylan Miller said.

“I’m his bigger brother but he was my mentor.”

This year, Balin Miller had also spent weeks solo climbing in Patagonia and the Canadian Rockies, ticking off a notoriously difficult ice climb called Reality Bath, which had been unrepeated for 37 years, according to Climbing magazine.

“He’s had probably one of the most impressive last six months of climbing of anyone that I can think of,” Clint Helander, an Alaska alpinist, told the Anchorage Daily News.

But this most recent trip to Yosemite wasn’t supposed to be hard climbing.

Miller had just arrived two weeks early to climb and enjoy the park’s beauty and solitude before the rest of his family, who planned to meet up there.

More than just a climber, he loved animals and was fun, kind and full of life, his mother said.

He often climbed with a stripe of glitter freckles across his cheekbones, describing it in a Climbing magazine interview like “a warrior putting makeup on before going into battle”.

“He has inspired so many people to do things that are perhaps unthinkable, including myself. I can’t imagine climbing ever again without him,” his brother said.