Alex Chiu, an engineer and alpine climber, was on one of the most frequently used routes at Mount McKinley, the tallest peak in North America.

Alex Chiu, a 41-year-old experienced alpinist, tragically died after falling 3,000 feet on Mount McKinley (Denali) during a ski mountaineering expedit

Climbers were on an icy Alaska mountain when they saw a man in their group fall 3,000 feet to his death in Denali National Park, officials said. Alex Chiu, 41, of Seattle died June 2 after falling from Mount McKinley's West Buttress climbing route,