Rescuers in the rugged Eastern Sierra are searching for a Seattle man who has been missing since early September — and possibly longer — after climbing among some of California’s most remote and daunting mountain peaks.

Billy Pierson, an experienced alpinist, was in California getting in shape for an upcoming trip to Nepal, according to a comment his brother, Steve Pierson, left on Facebook.

On Aug. 9, the alpinist was hiking with a friend. “After their hike, he separated from that friend and is believed to have headed toward Inyo County,” the Inyo County Sheriff’s office said in a news release. “He was later reported missing on September 10, 2025.”

It was not immediately clear when Billy Pierson separated from his friend, or who was the person who reported him missing. The Inyo County

See Full Page