David Breashears, a mountaineer, author and filmmaker who co-directed and co-produced a 1998 IMAX documentary about climbing Mount Everest, has died, his business manager confirmed Saturday. He was 68.
Breashears was found unresponsive at his home in Marblehead, Massachusetts, on Thursday, Ellen Golbranson said. She said he died of natural causes but "the exact cause of death remains unknown at this time."
Breashears summited Mount Everest five times, including with the IMAX camera in 1996, his family said.
"He combined his passion for climbing and photography to become one of the world's most admired adventure filmmakers," the family said in a written statement.
In 2007, Breashears founded GlacierWorks, which describes itself on Facebook as a nonprofit organization that "highlights changes to Himalayan glaciers through art, science, and adventure."
"With GlacierWorks, he used his climbing and photography experience to More